complier.h: add __noreturn and use it in code base

Add a __noreturn macro that wraps __attribute__((noreturn)) and replace
current users with the macro.

Change-Id: Iddd0728cf79678c3d1c1f7e7946c27375a644a7d
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/28505
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/lib/reset.c

@@ -19,7 +19,7 @@
 #include <halt.h>
 #include <reset.h>
 
-__attribute__((noreturn)) static void __hard_reset(void) {
+__noreturn static void __hard_reset(void) {
 	if (IS_ENABLED(CONFIG_HAVE_HARD_RESET))
 		do_hard_reset();
 	else