Update notes for submitted changes

* ASoC: wcd9xxx-mbhc: Avoid flipping current source setting
Update notes for submitted changes

* ASoC: wcd9320: Add ANC loopback path and cache HPF bypass control
Update notes for submitted changes

* ASoC: wcd9xxx: Correct wrong check conditions
Update notes for submitted changes

* ASoC: wcd9xxx: Synchronize button press with notifiers