hal: Fix VoIP Mute failure in SIP call during Voice call HOLD

- Unable to apply the mute in MT SIP call during Voice call
  in CALL_HOLD.
- Mute is only applied if the voice call state is INACTIVE.
  Thus when SIP call is made during Voice call in CALL_HOLD,
  the mute is not being reflected.
- Fix this issue by checking voice stream type to allow
  the mute to be applied.

Change-Id: I3af5225edd8e9a4123867b647de9405d5c4b9efc
CRs-Fixed: 642893
hal/usb: Add initial volume setting for USB headset

Some USB headsets start at 0 volume because of this even
if the Media Player volume is maximum cannot hear any audio.
Initialize device volume before starting the playback.

Change-Id: Ie6940fae6fd7946ce0a90a142aaf110d829eea8f
CRs-Fixed: 639168