ASoC: SOF: Add i.MX8QM device descriptor

Add SOF device and DT descriptors for i.MX8QM platform.

Signed-off-by: Paul Olaru <paul.olaru@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200210095817.13226-4-daniel.baluta@oss.nxp.com


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