MLECO-1933, MLECO-1914, MLECO-1885: Update to 21.05-rc2 components

Core driver and sofware dependencies updated to latest release
candidate revisions. Note: TensorFlow Lite Micro has not been
updated.

Also, gcc warnings for simple_platform target and ad use case have
been fixed.

Change-Id: I455b421f34375a719a941e6e220fe292a57613f5
diff --git a/source/application/hal/platforms/bare-metal/bsp/include/bsp.h b/source/application/hal/platforms/bare-metal/bsp/include/bsp.h
index fbe1ff6..20052ef 100644
--- a/source/application/hal/platforms/bare-metal/bsp/include/bsp.h
+++ b/source/application/hal/platforms/bare-metal/bsp/include/bsp.h
@@ -30,8 +30,8 @@
 
 #else /* MPS3_PLATFORM */
 
-#include "stubs_fvp.h"      /* Stubs for FVP. */
-#include "timer_fvp.h"      /* Timer API for FVP. */
+#include "stubs_simple_platform.h"      /* Stubs for simple_platform. */
+#include "timer_simple_platform.h"      /* Timer API for simple_platform. */
 
 #endif /* MPS3_PLATFORM */