ASoC: SOF: Intel: regroup all SoundWire/Intel functions in hda.c

ASoC: SOF: Intel: regroup all SoundWire/Intel functions in hda.c

To avoid circular dependencies between SOF/Intel and SoundWire/Intel,
we need to split the top-level hda.c from the rest of the code. This
patch first regroups all SoundWire related code in hda.c.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20240503135221.229202-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>