Fix SELinux denials for protected content playback

bug: 30087072
bug: 29937024
Change-Id: I8bf3032b8455556ff5332f538f43aeb514d3b290
diff --git a/mediadrmserver.te b/mediadrmserver.te
index cfa4b28..d9368ad 100644
--- a/mediadrmserver.te
+++ b/mediadrmserver.te
@@ -49,6 +49,7 @@
 allow mediadrmserver mediadrmserver_service:service_manager { add find };
 allow mediadrmserver mediaserver_service:service_manager { add find };
 allow mediadrmserver processinfo_service:service_manager find;
+allow mediadrmserver surfaceflinger_service:service_manager find;
 
 # only allow unprivileged socket ioctl commands
 allowxperm mediadrmserver self:{ rawip_socket tcp_socket udp_socket }