MLK-10183 ASoC: wm8962: separate ALC Coefficients to four reigsters

Attempt to read volatile register when cache_only is set will return
EBUSY. After playback/record, wm8962_runtime_suspend function will set
cache_only flag, so the volitale register ALC2 can't be read from cache.

Separate ALC Coefficients to four reigsters, the volatile register ALC2
will be read from hardware instead of cache.

Signed-off-by: Zidan Wang <zidan.wang@freescale.com>
1 file changed