m7spr: move overlays to common based off mcc and mnc.

Change-Id: I3ef959b53f55a320d4e31d1747b2e7a9bec635fb
m7spr: remove custom ril class and update ril properties.

Change-Id: I70e69187b2a68749d743ae91efd19aeecc8a802c
Merge remote-tracking branch 'upstream/cm-11.0' into cm-11.0