ASoC: rt5682: Add the soundwire support

This patch adds the soundwire support for ALC5682.

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Link: https://lore.kernel.org/r/20200219102858.20166-1-oder_chiou@realtek.com


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