IMSCM service: Define as system_api_service type

All platform_app and untrusted_app needs find access to
imscm_service. Making mscm_service as system_api_service type.

Change-Id: I5f110150d679e8469517a2ab204c8d8f90b73670
diff --git a/common/service.te b/common/service.te
index e51acae..da26d7f 100644
--- a/common/service.te
+++ b/common/service.te
@@ -8,7 +8,7 @@
 type wbc_service,               service_manager_type;
 type STAProxyService,           service_manager_type;
 type dun_service,               service_manager_type;
-type imscm_service,             service_manager_type;
+type imscm_service,             system_api_service, service_manager_type;
 type color_service,             service_manager_type;
 type wfdservice_service,        service_manager_type;
 type usf_service,               service_manager_type;