Allow cameraserver to read /dev/socket/mpdecision

Addresses:
avc: denied { search } for comm=""cameraserver"" name=""mpdecision""
dev=""tmpfs"" ino=11352 scontext=u:r:cameraserver:s0
tcontext=u:object_r:mpdecision_socket:s0 tclass=dir

Bug: 26982110
Bug: 26990688
Change-Id: I6ff0ca0afdd4be6f879c4ddb5bd0032678991737
diff --git a/sepolicy/cameraserver.te b/sepolicy/cameraserver.te
index 1c7371d..cb295d7 100644
--- a/sepolicy/cameraserver.te
+++ b/sepolicy/cameraserver.te
@@ -1,2 +1,3 @@
 unix_socket_send(cameraserver, camera, camera)
+allow cameraserver mpdecision_socket:dir r_dir_perms;
 unix_socket_send(cameraserver, mpdecision, mpdecision)