ASoC: Intel: boards: handle hda-dsp-common as a module

ASoC: Intel: boards: handle hda-dsp-common as a module

hda-dsp-common.o is linked multiple times due to copy/paste and
inertia. Move to a dedicated module with a namespace.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20210505163705.305616-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>