asoc: voice: Set BMS voting flag based on device tree property

Set BMS voting flag based on device tree property under
voice platform to set BMS power state to high/low during voice
call.

CRs-Fixed: 2356600
Change-Id: I43781c187e9694c6ad9e84904a41fbce589d89d0
Signed-off-by: Aditya Bavanari <abavanar@codeaurora.org>