ASoC: Intel: Skylake: Add 32bit support

We also support 32bit playback, so add that in DAI capabilities.

Signed-off-by: Samaga Krishna <samaga.krishna@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>