SPM: Remove ARM platforms header from SPM common code

Common code mustn't include ARM platforms headers.

Change-Id: Ib6e4f5a77c2d095e6e8c3ad89c89cb1959cd3043
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/plat/arm/board/fvp/include/platform_def.h b/plat/arm/board/fvp/include/platform_def.h
index 310db7b..7080fc3 100644
--- a/plat/arm/board/fvp/include/platform_def.h
+++ b/plat/arm/board/fvp/include/platform_def.h
@@ -8,6 +8,7 @@
 #define __PLATFORM_DEF_H__
 
 #include <arm_def.h>
+#include <arm_spm_def.h>
 #include <board_arm_def.h>
 #include <common_def.h>
 #include <tzc400.h>