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_v2_app.te b/private/untrusted_v2_app.te
index df37fdd..e511709 100644
--- a/private/untrusted_v2_app.te
+++ b/private/untrusted_v2_app.te
@@ -29,6 +29,7 @@
 allow untrusted_v2_app mediacodec_service:service_manager find;
 allow untrusted_v2_app mediametrics_service:service_manager find;
 allow untrusted_v2_app mediadrmserver_service:service_manager find;
+allow untrusted_v2_app mediacasserver_service:service_manager find;
 allow untrusted_v2_app nfc_service:service_manager find;
 allow untrusted_v2_app radio_service:service_manager find;
 allow untrusted_v2_app surfaceflinger_service:service_manager find;