ARM: dts: msm: Use V2 chip for sdxpoorwills-ttp device tree

TTP boards are only built with the V2 chip so
rename the file and include V2 configuration
for sdxpoorwills-ttp devices.

Change-Id: I827c40f07632165ae95ea3992477c87f108866f3
Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>