intel/skylake: nhlt: Update Max98373's capture format

intel/skylake: nhlt: Update Max98373's capture format

Max98373's NHLT capture configuration is used for IV feedback for
DSM algorithm.
Feedback is 4-channel data. Without this configuration below error
is seen in dmesg:

[  315.784250] snd_soc_skl 0000:00:1f.3: Blob NULL for id 0 type 3 dirn 1
[  315.784263] snd_soc_skl 0000:00:1f.3: PCM: ch 4, freq 48000, fmt 32

So, update nhlt configuration accordingly.

BUG=b:79362472
TEST=Audio playback works with IV feedback enabled

Change-Id: I75434a63fe030ed9bb963c6d300d833a8e7d2d66
Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Reviewed-on: https://review.coreboot.org/26384
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>