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/utils/system_init.c b/source/application/hal/platforms/bare-metal/utils/system_init.c
index f95f214..376f08b 100644
--- a/source/application/hal/platforms/bare-metal/utils/system_init.c
+++ b/source/application/hal/platforms/bare-metal/utils/system_init.c
@@ -96,7 +96,7 @@
     }
 #else /* MPS3_PLATFORM */
 
-    info("ARM model environment ready..\n");
+    info("%s: complete\n", __FUNCTION__);
     return 0;
 #endif /* MPS3_PLATFORM */