gps: Fork the GPS HAL

For this device's loc_api_v02, we need a version older than the
one at hw/qcom

Change-Id: I855c626faa5fc7de72e57e56aac5ea3b61cfe042
selinux: Redo policies, inherit qcom common rules

Change-Id: I139b78974912aa80c949203a47b329e93efbd9b7
L5 Start: Rebase g2-common over cm-12.0 with few improvements & fixes