Move ADDR32() hack to arch/x86

It's arch specific, so no need to pollute non-x86 with it.

Change-Id: I99ec76d591789db186e8a33774565e5a04fc4e47
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/21392
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/cpu/x86/smm/smmrelocate.S b/src/cpu/x86/smm/smmrelocate.S
index b3be51d..230c78d 100644
--- a/src/cpu/x86/smm/smmrelocate.S
+++ b/src/cpu/x86/smm/smmrelocate.S
@@ -37,7 +37,7 @@
 #endif
 
 // ADDR32() macro
-#include <compiler.h>
+#include <arch/registers.h>
 
 #if IS_ENABLED(CONFIG_SMM_TSEG)
 #error "Don't use this file with TSEG."