ASoC: cs42l43: Move headset bias sense enable earlier in process

Currently the bias sense is enabled along with the button detect, but
this has two problems. Firstly, the detections themselves arn't covered
by the bias sense, potentially resulting in pops and secondly, the
sequence of enabling/disabling looks like:

enable bias
enable bias sense
disable bias sense
disable bias

When the bias sense is disabled but the bias is still on the clamp is
removed and a pop results. Fix both of these issues by moving the bias
sense enable/disable to be along with the bias itself. With a resulting
sequence of:

enable bias sense
enable bias
disable bias
disable bias sense

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230919103116.580305-5-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>