ASoC: cs42l42: Add Capture Support

Add support for capture path on headseat pins

Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210306185553.62053-11-tanureal@opensource.cirrus.com


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