Introduce asec_public_file type.

This new type will allow us to write finer-grained
policy concerning asec containers. Some files of
these containers need to be world readable.

Change-Id: Iefee74214d664acd262edecbb4f981d633ff96ce
Signed-off-by: rpcraig <rpcraig@tycho.ncsc.mil>
diff --git a/mediaserver.te b/mediaserver.te
index ad7cdcb..31b4818 100644
--- a/mediaserver.te
+++ b/mediaserver.te
@@ -39,7 +39,7 @@
 allow mediaserver sysfs:file rw_file_perms;
 
 # XXX Why?
-allow mediaserver { apk_data_file asec_apk_file }:file { read getattr };
+allow mediaserver apk_data_file:file { read getattr };
 
 # Access camera device.
 allow mediaserver camera_device:chr_file rw_file_perms;