ASoC: msm8x16-wcd: Fix lineout pop issue

At lineout of analog codec, observe pop during powerdown.
Handle teardown sequence to turn off registers as per
HW sequence.

Change-Id: Ic3a7dc34416b5242d15c5b4cd494b380dc7de7de
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>