arm_interface: Make include path relative for arm_interface.h

Makes it consistent with the rest of the includes.

src/core/arm/arm_interface.cpp

@@ -2,9 +2,9 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#include "arm_interface.h"
 #include "common/common_types.h"
 #include "common/logging/log.h"
+#include "core/arm/arm_interface.h"
 #include "core/memory.h"
 
 namespace Core {