snd_soc_msm: Fix for VoLTE call + BT and other devices

- During VoLTE call no audio is heard over BT
  device.
- The issue is because the mixer control for
  VoLTE is "VoLTE", for BT it is "BT SCO Rx"
  and for VoLTE + BT it is
  "VoLTE CallBT SCO Rx". Thus, when the mixer
  controls are combined for VoLTE and BT, an
  incorrect mixer control is created
  "VoLTEBT SCO Rx".
- Fixed by changing "VoLTE CallBT SCO Rx" to
  "VoLTEBT SCO Rx". Similar changes were
  made for ther devices.

Change-Id: Ia5d30027a31977d3e8baead64506bcd7f18cbe9b
CRs-fixed: 446294
4 files changed