ASoC: rt711: mutex between calibration and power state changes

To avoid calibration time-out, this patch adds the mutex between calibration and power state changes

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20201217085651.24580-1-shumingf@realtek.com


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