m7vzw: Switch back to HTCQualcommRIL class

Until M7CDMA class is merged

Change-Id: Id9f5480d2dba87f5fd4454a215ca5356da3ba225
Set CDMA SUBSCRIPTION SOURCE to RUIM in Database for this device

Change-Id: I4650a5078c756828273ed60e85649771daffb023
m7vzw: remove custom RIL class

Change-Id: I1dfcf7d4cd1937c039af36a1eed15ea4faaf018c
m7vzw: move overlays to common based off mcc and mnc.

Change-Id: Ifd6ba8cfd972cc4e10c83618f60425a1a0c92186