spmc: hypervisor calls moved to a separate module

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I285ffc684aa780246468355add9d03c1b5b8fefb
diff --git a/spm/cactus/cactus_main.c b/spm/cactus/cactus_main.c
index e54f3b0..ed48fe4 100644
--- a/spm/cactus/cactus_main.c
+++ b/spm/cactus/cactus_main.c
@@ -20,6 +20,7 @@
 #include <plat/common/platform.h>
 #include <platform_def.h>
 #include <sp_helpers.h>
+#include <spm_helpers.h>
 #include <std_svc.h>
 
 #include "cactus_def.h"