ASoC: wcd9xxx: Fix codec regulator override

Fix regulator override functionality to
remove mute check for overriding to class
AB from class H. Add check to vneg_ctl
function to execute only for Tasha.

CRs-fixed: 1099810
Change-Id: I082027fc6347ae98b6fd3fe0d5aadac805fb0b84
Signed-off-by: Karthikeyan Mani <kmani@codeaurora.org>