Remove dependency on cmsis_device

The applications doesn't need the cmsis device dependency. Remove it and
add the explicit headers that are required to access assembler defines.

Change-Id: I959b60e0ca150a75145319df207cfeb6361f0022
diff --git a/applications/message_process/src/message_process.cc b/applications/message_process/src/message_process.cc
index 4533455..5640a1a 100644
--- a/applications/message_process/src/message_process.cc
+++ b/applications/message_process/src/message_process.cc
@@ -18,6 +18,8 @@
 
 #include <message_process.hpp>
 
+#include "cmsis_compiler.h"
+
 #include <cstddef>
 #include <cstdio>
 #include <cstring>