MediaCAS: adding media.cas to service

Also allow media.extractor to use media.cas for descrambling.

bug: 22804304

Change-Id: Id283b31badecb11011211a776ba9ff5167a9019d
diff --git a/private/untrusted_app_all.te b/private/untrusted_app_all.te
index 0315252..edd1f93 100644
--- a/private/untrusted_app_all.te
+++ b/private/untrusted_app_all.te
@@ -66,6 +66,7 @@
 allow untrusted_app_all mediacodec_service:service_manager find;
 allow untrusted_app_all mediametrics_service:service_manager find;
 allow untrusted_app_all mediadrmserver_service:service_manager find;
+allow untrusted_app_all mediacasserver_service:service_manager find;
 allow untrusted_app_all nfc_service:service_manager find;
 allow untrusted_app_all radio_service:service_manager find;
 allow untrusted_app_all surfaceflinger_service:service_manager find;