ASoC: amd: create platform devices for Renoir

Create platform devices for generic dmic codec driver
and machine driver.
These platform devices required for creation of sound card.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200518171704.24999-13-Vijendar.Mukunda@amd.com


Signed-off-by: Mark Brown <broonie@kernel.org>