ASoC: Intel: sof_sdw_cs_amp: Connect outputs to a speaker widget

ASoC: Intel: sof_sdw_cs_amp: Connect outputs to a speaker widget

Hookup the CS35L56 DAPM_OUTPUT widgets to a DAPM_SPK widget so
that there is a complete logical path to a speaker.

There is no particular reason to use multiple speaker widgets.
The CS35L56 are designed to work together as a set so they have
all been connected to a single speaker widget.

Instead of a hardcoded list of codec widget names, the code walks
through all the codecs on the dailink and for every cs35l56 it uses
its name prefix to construct the source end of the route. This adds
a small amount of overhead during probe but has the benefit that it
isn't dependent on every system using the same prefixes.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20231205135001.2506070-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>