sound core: add soc_delay

sound core: add soc_delay

BZ: 35394

soc_delay is a new delay varible which should be added to overall sound delay
reporting. This is the delay encountered in queing of buffers inside soc, like
dsp buffers, usb usb queue delay etc

Change-Id: I8483ed9d7f345dcd2124d97e9c807e6e11fc34d7
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Reviewed-on: http://android.intel.com:8080/49238
Reviewed-by: Babu, Ramesh <ramesh.babu@intel.com>
Reviewed-by: Koul, Vinod <vinod.koul@intel.com>
Reviewed-by: Gupta, ArvindX K <arvindx.k.gupta@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>