Revert "audio:sst: Change work queues to singlethread work queues"

Revert "audio:sst: Change work queues to singlethread work queues"

BZ: 37713

This reverts commit e669f0fd2aeb0ae5b7a524ad05e3a5c977eeb4ce.

Change-Id: I82f8f824dc639aa4a92b803f8a9947e51472e171
Signed-off-by: Ramesh Babu K V <ramesh.babu@intel.com>
Reviewed-on: http://android.intel.com:8080/52158
Reviewed-by: Koul, Vinod <vinod.koul@intel.com>
Reviewed-by: Gupta, ArvindX K <arvindx.k.gupta@intel.com>
Reviewed-by: Continente, Christophe <christophe.continente@intel.com>
Reviewed-by: Hibare, PramodX <pramodx.hibare@intel.com>
Tested-by: Hibare, PramodX <pramodx.hibare@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>