base: added national roamning

http://jira.omnirom.org/browse/OMNI-869

Users of MCC 272 MNC 11 can roam on MNC 02

Change-Id: I70dd2efe7e3bd11e3e33ff40f66bf75a0b586aa5
Merge remote-tracking branch 'omni/android-4.4' into android-4.4