Change security policy so all apps can read /dev/xt_qtaguid.

Generic init.rc allows any process to use
socket tagging. Adjust app policy to ensure
that any app can read from the misc device.

Change-Id: I4076f0fbc1795f57a4227492f6bfc39a4398ffa5
Signed-off-by: rpcraig <rpcraig@tycho.ncsc.mil>