frameworks/base: added national roaming for BSNL in India

http://jira.omnirom.org/browse/OMNI-391

Change-Id: I81e54f301a70300ff7d2e873480b197c58bbdb8a
frameworks/base: added national roaming for Noverca in Italia

http://jira.omnirom.org/browse/OMNI-377

Change-Id: I1b792244e97114a648efb40c6d01ea0c595cafdd
Return: Custom Carrier Label [1/2]

PS 3 : Fix code style

Change-Id: Ic865e3c5204ab05f1e9ab0e081a54b155b577086

Patchset: 4
https://gerrit.slimroms.net/#/c/1849/