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
m7spr: Add setup-makefiles.sh convenience script

Change-Id: I76c3e16db8149d97d5b076e01cbf0edfbc44ed24
m7spr: remove call to nonexistent overlay

Change-Id: If25228997a806b2d05bdeb3595c7873314f38e46
m7spr: move multiple ring prop to msm8960

Change-Id: Ie0275b3e85a0cc8f9eb8de4eb03ebf4fd249ecde