ASoC: wcd9xxx: Add support for MBHC 5-pole plug detection

Add support to determine the presence of second microphone
on a 5-pole plug used for active noise cancellation.

Change-Id: I85227a00c47fed1d0e4453b77902c1b473097a5b
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>
7 files changed