TWSP-HFP: set initial twsp role based on odd or even BD_ADDR

For first connected earbud, while RFCOMM opened, set initial
earbud twsp role to be LEFT if BD_ADDR is odd, or else set
to be RIGHT.

Change-Id: I777634498553b41ff0e44e6e5dd7ff4a751cba3b
CRs-Fixed: 2399533
2 files changed