fix(misra): fix MISRA-C:2012 8.7 in handler.c

Signed-off-by: AlexeiFedorov <Alexei.Fedorov@arm.com>
Change-Id: I2ed5c6b5ab07790bf66cc45b42d9911d4fa24017
diff --git a/runtime/core/handler.c b/runtime/core/handler.c
index 300dd15..9b2f7df 100644
--- a/runtime/core/handler.c
+++ b/runtime/core/handler.c
@@ -23,7 +23,7 @@
 
 #define RMI_STATUS_STRING(_id)[RMI_##_id] = #_id
 
-const char *rmi_status_string[] = {
+static const char *rmi_status_string[] = {
 	RMI_STATUS_STRING(SUCCESS),
 	RMI_STATUS_STRING(ERROR_INPUT),
 	RMI_STATUS_STRING(ERROR_REALM),
@@ -388,7 +388,7 @@
  */
 extern void *ns_access_ret_0;
 
-struct rmm_trap_element rmm_trap_list[] = {
+static struct rmm_trap_element rmm_trap_list[] = {
 	RMM_TRAP_HANDLER(ns_read, ns_access_ret_0),
 	RMM_TRAP_HANDLER(ns_write, ns_access_ret_0),
 };