Add smd_rpc_sym.c
Fix warnings and compilation errors with gcc 4.8

Conflicts:
	arch/arm/boot/compressed/Makefile
	arch/arm/lib/memset.S

Signed-off-by: Jean Francis Dominique S. Mabalot <jfdsmabalot@redhat.com>

Conflicts:
	arch/arm/boot/compressed/Makefile
	arch/arm/lib/memset.S