ASoC: SOF: IPC4: add sdw blob

Add IPC4 SoundWire blob. It includes a common IPC4 gateway and a multiple
ALH configuration struct which is used for storing the aggregated
SoundWire stream information.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220609032643.916882-24-ranjani.sridharan@linux.intel.com


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