Seandroid: Added rules to thermal-engine

Added rules to thermal-engine for access to thermal-sockets which
is needed for  mediaserver ,camera and couple of other services.

Change-Id: I7f5f89c112357ee595f275b20325fede40439924
diff --git a/common/mediaserver.te b/common/mediaserver.te
index dbd59da..273890c 100644
--- a/common/mediaserver.te
+++ b/common/mediaserver.te
@@ -30,3 +30,6 @@
 allow mediaserver mpctl_socket:dir r_dir_perms;
 unix_socket_send(mediaserver, mpctl, perfd)
 unix_socket_connect(mediaserver, mpctl, perfd)
+
+# for thermal sock files
+unix_socket_connect(mediaserver, thermal, thermal-engine)