SE policy for tuner service.

Test: make; acloud;  tuner sample input
Change-Id: I651632ec7f4ba79d94738c11c343f63510e59aa6
diff --git a/private/system_server.te b/private/system_server.te
index 9979fd5..9597fde 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -290,6 +290,7 @@
   mediaserver
   mediaswcodec
   mediatranscoding
+  mediatuner
   netd
   sdcardd
   statsd
@@ -778,6 +779,7 @@
 allow system_server mediametrics_service:service_manager find;
 allow system_server mediaextractor_service:service_manager find;
 allow system_server mediadrmserver_service:service_manager find;
+allow system_server mediatuner_service:service_manager find;
 allow system_server netd_service:service_manager find;
 allow system_server nfc_service:service_manager find;
 allow system_server radio_service:service_manager find;