ASoC: SOF: Intel: hda-dai-ops: reset device count for SoundWire DAIs

The solution used before LunarLake relies on a 'Multi-gateway'
firmware configuration. This is no longer needed with the DMA hardware
handling multiple links directly. To avoid adding a platform-specific
quirk in the generic IPC4 code, this patch resets the device count
when fetching the stream context.

Suggested-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
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/20230807210959.506849-19-pierre-louis.bossart@linux.intel.com


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