ARM: dts: msm: Add changes to support BMS voting in QM215

Add a flag to support BMS voting in voice call
for QM215 target.

CRs-Fixed: 2356600
Change-Id: I88dff137c4457023d391db7f3a0b2d4630a406e3
Signed-off-by: Aditya Bavanari <abavanar@codeaurora.org>