drivers: migrate to SPDX identifier

Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>

drivers/1wire/1wire.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/1wire/1wire.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/1wire/1wire_crc.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/1wire/1wire_crc.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/1wire/1wire_internal.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/1wire/1wire_internal.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/1wire/1wire_read.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/1wire/1wire_read.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/1wire/1wire_write.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/1wire/1wire_write.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/1wire/1wire_writeread.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/1wire/1wire_writeread.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/1wire/CMakeLists.txt

@@ -1,6 +1,8 @@
 # ##############################################################################
 # drivers/1wire/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this

drivers/1wire/Make.defs

@@ -1,6 +1,8 @@
 ############################################################################
 # drivers/1wire/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The

drivers/1wire/ds28e17.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/1wire/ds28e17.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/CMakeLists.txt

@@ -1,6 +1,8 @@
 # ##############################################################################
 # drivers/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this

drivers/Makefile

@@ -1,6 +1,8 @@
 ############################################################################
 # drivers/Makefile
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The

drivers/aie/Make.defs

@@ -1,6 +1,8 @@
 ############################################################################
 # drivers/aie/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The

drivers/aie/ai_engine.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/aie/ai_engine.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/CMakeLists.txt

@@ -1,6 +1,8 @@
 # ##############################################################################
 # drivers/analog/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this

drivers/analog/Make.defs

@@ -1,6 +1,8 @@
 ############################################################################
 # drivers/analog/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The

drivers/analog/ad5410.c

@@ -1,14 +1,11 @@
 /****************************************************************************
  * drivers/analog/ad5410.c
  *
- *   Copyright (C) 2010, 2016 Gregory Nutt. All rights reserved.
+ * SPDX-License-Identifier: BSD-3-Clause
- *   Copyright (C) 2011 Li Zhuoyi. All rights reserved.
+ * SPDX-FileCopyrightText: 2010, 2016 Gregory Nutt. All rights reserved.
- *   Author: Li Zhuoyi <lzyy.cn@gmail.com>
+ * SPDX-FileCopyrightText: 2011 Li Zhuoyi. All rights reserved.
- *           Gregory Nutt <gnutt@nuttx.org>
+ * SPDX-FileContributor: Li Zhuoyi <lzyy.cn@gmail.com>
- *
+ * SPDX-FileContributor: Gregory Nutt <gnutt@nuttx.org>
- * This file is a part of NuttX:
- *
- *   Copyright (C) 2010 Gregory Nutt. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions

drivers/analog/adc.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/adc.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/ads1242.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/ads1242.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/ads1255.c

@@ -1,14 +1,11 @@
 /****************************************************************************
  * drivers/analog/ads1255.c
  *
- *   Copyright (C) 2010, 2016 Gregory Nutt. All rights reserved.
+ * SPDX-License-Identifier: BSD-3-Clause
- *   Copyright (C) 2011 Li Zhuoyi. All rights reserved.
+ * SPDX-FileCopyrightText: 2010, 2016 Gregory Nutt. All rights reserved.
- *   Author: Li Zhuoyi <lzyy.cn@gmail.com>
+ * SPDX-FileCopyrightText: 2011 Li Zhuoyi. All rights reserved.
- *           Gregory Nutt <gnutt@nuttx.org>
+ * SPDX-FileContributor: Li Zhuoyi <lzyy.cn@gmail.com>
- *
+ * SPDX-FileContributor: Gregory Nutt <gnutt@nuttx.org>
- * This file is a part of NuttX:
- *
- *   Copyright (C) 2010 Gregory Nutt. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions

drivers/analog/ads7828.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/ads7828.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/comp.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/comp.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/dac.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/dac.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/dac7554.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/dac7554.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/dac7571.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/dac7571.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/hx711.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/hx711.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/lmp92001.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/lmp92001.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/ltc1867l.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/ltc1867l.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/max1161x.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/max1161x.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/mcp3008.c

@@ -1,7 +1,7 @@
 /****************************************************************************
  * drivers/analog/mcp3008.c
  *
- * Contributed by Matteo Golin
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with

drivers/analog/mcp48xx.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/mcp48xx.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/opamp.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/opamp.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/analog/pga11x.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/analog/pga11x.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/CMakeLists.txt

@@ -1,6 +1,8 @@
 # ##############################################################################
 # drivers/audio/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this

drivers/audio/Make.defs

@@ -1,6 +1,8 @@
 ############################################################################
 # drivers/audio/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The

drivers/audio/audio_dma.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/audio_dma.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/audio_i2s.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/audio_i2s.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/audio_null.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/audio_null.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/cs4344.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/cs4344.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/cs4344.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/cs4344.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/cs43l22.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/cs43l22.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/cs43l22.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/cs43l22.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/cs43l22_debug.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/cs43l22_debug.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/es8311.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/es8311.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/es8311.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/es8311.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/es8311_debug.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/es8311_debug.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/es8388.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/es8388.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/es8388.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/es8388.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/es8388_debug.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/es8388_debug.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/esxxxx_common.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/esxxxx_common.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

drivers/audio/tone.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/audio/tone.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The