Audio: voice concurrency support for Bear family.

- Modem & Audio uses same DSP on Bear famliy, which will limit
  Audio usecases  during call mode
- Route all audio output sessions to ULL path
  during in call mode
- Route all non music sessions to ULL path if WFD
  session is active(to disable multiple post processing on ADSP)
- All VoIP, compress, deep buffer, record usecases
  need to close before voice call activation.
- All incoming VoIP, compress, deep buffer, record usecases
  need to block during voice call
- setMode(IN_CALL) itself is not sufficient to know if we are
in actual voice call.
- Add keyvalue parameters support to know if we are in voice call
and policy hal can query the same and make decissions based on it.

Change-Id: I6879081dd30969a7d1f162ea73b912442db2bef6