ASoC: Intel: sof-soundwire: add support for rt5682 on link2

The UpExtreme board provides support for SoundWire link2 in 2 of the 3
advanced modes. Let's use it w/ rt5682.

Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200821195603.215535-4-pierre-louis.bossart@linux.intel.com


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