SE policy for tuner service.

Test: make; acloud;  tuner sample input
Change-Id: I651632ec7f4ba79d94738c11c343f63510e59aa6
diff --git a/private/file_contexts b/private/file_contexts
index 80e805e..2ce8892 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -258,6 +258,7 @@
 /system/bin/mediaextractor	u:object_r:mediaextractor_exec:s0
 /system/bin/mediaswcodec	u:object_r:mediaswcodec_exec:s0
 /system/bin/mediatranscoding	u:object_r:mediatranscoding_exec:s0
+/system/bin/mediatuner	        u:object_r:mediatuner_exec:s0
 /system/bin/mdnsd	u:object_r:mdnsd_exec:s0
 /system/bin/installd	u:object_r:installd_exec:s0
 /system/bin/otapreopt_chroot   u:object_r:otapreopt_chroot_exec:s0