ASoC: wcd9xxx: Notify mbhc when TX3 path is enabled

On Tapan, ADC2/3 both being the same, it is possible that
polling noise can be captured in the recorded audio when
IN3 path is used for the recording with headset inserted.
Notify MBHC when IN3/TX3 path is enabled so that micbias
source can be switched to VDDIO to avoid polling noise to
be captured in the recorded audio.

CRs-fixed: 573616
Change-Id: I7db0ff91021e069bcc510d1d9cdbc8f2b0ee72c7
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>
5 files changed