ASoC: Intel: sof_sdw: increase sdw pin index for each sdw link

ASoC: Intel: sof_sdw: increase sdw pin index for each sdw link

To support multiple codecs per SoundWire link, we have to assign multiple
CPU DAIs to different DAI links sharing the same physical link. This is
not possible with the existing code since we assume that only 'Pin2' is
used for playback and 'Pin3' used for capture - additional DAIs cannot
be handled.

This patch enables more CPU DAIs to be used, e.g. "SDW0 Pin2",
"SDW0 Pin3", and "SDW0 Pin4" for SDW0-Playback-SimpleJack,
SDW0-Capture-SimpleJack, and SDW0-Playback-SmartAmp DAI links on physical
link #0.

Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20230602202225.249209-15-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>