ASoC: rt5682s: Reduce coupling of Micbias and Vref2 settings

Some parts of rt5682s CCF function are implemented by
'MICBIAS' and 'Vref2' dapm widgets.

There is a risk of causing not expected behavior if we
mix using dapm and CCF operations in machine specific code.
This patch reduces the coupling.

Signed-off-by: Derek Fang <derek.fang@realtek.com>
Link: https://lore.kernel.org/r/20220913025658.5005-1-derek.fang@realtek.com


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