qcom-common: add common qcom ril class
Revert "qcom-common: Cleanup LPM configuration"

This reverts commit fb0fd73cf9e51d8c42a9bc3da6d0c23869790d3a.

Conflicts:
	BoardConfigCommon.mk
qcom-common: Add RIL startup script for IPv6 tethering

Change-Id: I6c1fba6ea51451b218c5daae30ae0dc37838f7e0