doxygen: Added some subgroups to API and IO

I2C library, Media Manager and Profiling Support

Update #3706.

cpukit/include/rtems/libi2c.h

@@ -3,7 +3,7 @@
  *
  * @ingroup libi2c
  *
- * @brief I2C Library
+ * @brief Legacy I2C Library
  */
 
 #ifndef _RTEMS_LIBI2C_H
@@ -63,9 +63,11 @@ extern "C" {
 #endif
 
 /**
- * @defgroup libi2c I2C Library
+ * @defgroup libi2c Legacy I2C Library
  *
- * @brief I2C library.
+ * @ingroup RTEMSDeviceDrivers
+ *
+ * @brief Legacy I2C library.
  *
  */
 /**@{**/

cpukit/include/rtems/media.h

@@ -1,9 +1,9 @@
 /**
  * @file
  *
- * @ingroup RTEMSMedia
+ * @ingroup RTEMSIOMedia
  *
- * @brief Media API.
+ * @brief Media Manager API.
  */
 
 /*
@@ -31,7 +31,9 @@ extern "C" {
 #endif /* __cplusplus */
 
 /**
- * @defgroup RTEMSMedia Media Manager
+ * @defgroup RTEMSIOMedia Media Manager
+ *
+ * @ingroup LibIO
  *
  * @brief Removable media support.
  *

cpukit/include/rtems/profiling.h

@@ -34,6 +34,8 @@ extern "C" {
 /**
  * @defgroup Profiling Profiling Support
  *
+ * @ingroup RTEMSAPI
+ *
  * @brief The profiling support offers functions to report profiling
  * information available in the system.
  *