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/virtio/CMakeLists.txt

@@ -1,6 +1,8 @@
 # ##############################################################################
 # drivers/virtio/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/virtio/Make.defs

@@ -1,6 +1,8 @@
 ############################################################################
 # drivers/virtio/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/virtio/virtio-blk.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-blk.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/virtio/virtio-blk.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-blk.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/virtio/virtio-gpu.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-gpu.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/virtio/virtio-gpu.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-gpu.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/virtio/virtio-input.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-input.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/virtio/virtio-input.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-input.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/virtio/virtio-mmio.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-mmio.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/virtio/virtio-net.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-net.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/virtio/virtio-net.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-net.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/virtio/virtio-pci-legacy.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-pci-legacy.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/virtio/virtio-pci-modern.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-pci-modern.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/virtio/virtio-pci.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-pci.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/virtio/virtio-pci.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-pci.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/virtio/virtio-rng.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-rng.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/virtio/virtio-rng.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-rng.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/virtio/virtio-rpmb.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-rpmb.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/virtio/virtio-rpmb.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-rpmb.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/virtio/virtio-serial.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-serial.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/virtio/virtio-serial.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-serial.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/virtio/virtio-snd.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-snd.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/virtio/virtio-snd.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio-snd.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/virtio/virtio.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * drivers/virtio/virtio.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