hal : Fix voice call tx mute issue on BT

 -voice call tx mute is observed in stress test as decoder config
  is not reset and leading to mute in tx.
 -this can happen in two scenarios:
  a. LDAC ABR + Audio Server restart + voice call over BT
  b. voice call with SWB speech codec and 2nd call with NB/WB codec.

 -always reset decoder config on a2dp suspend without checking
  for ABR use case.

Change-Id: I72be864f05cab6650a09190939d068e919a10a36