ASoC: wcd9xxx: Mute during Impedance detection

Verify HPH PA state before disabling PA to avoid mute
during headset impedance detection

CRs-Fixed: 578022
Change-Id: I156410c92507b20690c7576bed830563107c0d22
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
2 files changed