t6vzw: Add setup-makefiles script

Change-Id: I67537f00bf1756c54f6a6233fd766d25091239b0
t6vzw: move Telephony overlay to device

These overlay settings are applicable to t6vzw only, and should be
applied to more spns than 311480. Move them out of common and into
the correct overlay structure here.

Change-Id: I33c5e522cfbb43a8fd7e347fe0a06783d3015c70
t6vzw: add/update props

Change-Id: I4cb0297c548cfca53e6b62f702595dafbb215d0c