intel/skylake: nhlt: Add capture config for echo ref stream for Max98373 Codec

During Speaker playback, quad Channel I/V feedback data is
captured from SSP0 Rx. Out of these 4-channels, Stereo V-Sense data
needs to be given as echo ref stream.
So, adding stereo capture config to max98373_capture_formats.

BUG=b:110074225
TEST='Audio playback and Capture Stereo echo ref data'

Change-Id: I6fe619ece94d5011caffe37ef10b48f956938db9
Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Reviewed-on: https://review.coreboot.org/27182
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
1 file changed