Add the Doxygen note to non-supported RTOS kernel APIs.

Author: rajkan01

rtos/Kernel.h

@@ -49,13 +49,15 @@ uint64_t get_ms_count();
   @param   fptr pointer to the function to be called
 
   @note You may call this function from ISR context.
+  @note Bare metal profile: This API is not supported.
 */
 void attach_idle_hook(void (*fptr)(void));
 
 /** Attach a function to be called when a thread terminates.
   @param   fptr pointer to the function to be called
 
   @note You may call this function from ISR context.
+  @note Bare metal profile: This API is not supported.
 */
 void attach_thread_terminate_hook(void (*fptr)(osThreadId_t id));