ASoC: nau8825: add clock management for power saving

Adjust dapm widget to manage clock from power event for power saving.

Signed-off-by: David Lin <CTLIN0@nuvoton.com>
Signed-off-by: Mac Chiang <mac.chiang@intel.com>
Link: https://lore.kernel.org/r/20211025113857.3860951-3-CTLIN0@nuvoton.com


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