Label persist audio properties

label all persist.audio.* properties
and allow mediaserver access to them.

Change-Id: If5755d9783dce298e66a25bcb7f17ff17bd83ea7
diff --git a/mediaserver.te b/mediaserver.te
index 4b299a0..0181e29 100644
--- a/mediaserver.te
+++ b/mediaserver.te
@@ -3,6 +3,7 @@
 type mediaserver_exec, exec_type, file_type;
 
 init_daemon_domain(mediaserver)
+unix_socket_connect(mediaserver, property, init)
 net_domain(mediaserver)
 typeattribute mediaserver mlstrustedsubject;
 allow mediaserver kernel:system module_request;
@@ -43,3 +44,4 @@
 allow mediaserver rild:unix_stream_socket connectto;
 
 allow mediaserver tee_device:chr_file rw_file_perms;
+allow mediaserver audio_prop:property_service set;