Under snd_sof_dev device scope, create platform device for dmic
codec.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/168050621098.26.7486882101201297853@mailman-core.alsa-project.orgSigned-off-by: Mark Brown <broonie@kernel.org>