Audio Comms I2S Test Driver : add timeout + add abort command support

Audio Comms I2S Test Driver : add timeout + add abort command support

BZ: 37691

Add timeout on read and write that will abort ssp operation if elapsed.
Add checks concerning dma channel allocation.

Change-Id: I62e6ebfde12defcc0165ee6e188d0a5eb3691c6d
Signed-off-by: Renaud de Chivre <renaud.de.chivre@intel.com>
Reviewed-on: http://android.intel.com:8080/47226
Reviewed-by: Mendi, EduardoX <eduardox.mendi@intel.com>
Tested-by: Mendi, EduardoX <eduardox.mendi@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>