hal: msm8960: add support for 'voice-handset'

Change-Id: I7674e09b70b26ebbca83a0acf2f6d8b237f978a3
hal: msm8960: use voice usecases in communication mode (VOIP)

Change-Id: I3aadc62af15eff09af415fa2a8e4fa39a6ff0792