endeavoru: xt_qtaguid: squashed commits

   * netfilter: xt_qtaguid: report only uid tags to non-privileged processes
   * netfilter: xt_qtaguid: fix error exit that would keep a spinlock.
   * netfilter: qtaguid: Don't BUG_ON if create_if_tag_stat fails
   * netfilter: xt_qtaguid: remove AID_* dependency for access control
   * netfilter: xt_qtaguid: extend iface stat to report protocols
   * netfilter: xt_qtaguid: Allow tracking loopback

Change-Id: Ife69f9063518961cc7a9a2eef90db0f45c6d9e6b