audio: To Enable Audio for CTP.

audio: To Enable Audio for CTP.

BZ: 15274 15273

Add codec driver for Cirrus Logic cs42l73
Added CLV Machine driver to integrate codec driver for Clovertrail Platform
Added support to enable Audio on Clovertrail platform

Change-Id: Iaa1e9232bd9b2095c38982b190fbc1b934ab642e
Signed-off-by: Jeeja Kp <jeeja.kp@intel.com>
Signed-off-by: Ojas Chauhan <ojas.chauhan@intel.com>
Reviewed-on: http://android.intel.com:8080/33071
Reviewed-by: Agarwal, Vaibhav <vaibhav.agarwal@intel.com>
Reviewed-by: Koul, Vinod <vinod.koul@intel.com>
Reviewed-by: M, Arulselvan <arulselvan.m@intel.com>
Tested-by: M, Arulselvan <arulselvan.m@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>