ARM: dts: msm: Add QCA6174 BT cfg for msm8996 DTP

QCA6174 BT configuration is required to be added in
msm8996 DTP. Enable BT reset, VDD-core, VDD-pa, VDD-io,
VDD-xtal and chip power.

Change-Id: Id2ecda7c3fe712867d3bb2ff1efd84a67bdac7a1
Signed-off-by: Paul Zhang <paulz@codeaurora.org>