ASoC: msm8x16-wcd: reset pa select after ear pa disable

Current code resets the pa select from ear to hph
before ear pa is disabled. By disabling the ear pa first
and then resetting the pa select bit reduces the
ear turn off pop to 0.45uV.

CRs-Fixed: 643991
Change-Id: I5ca10ce7aca5ef07c8266fde93ef06ef809f81e9
Signed-off-by: Aravind Kumar <akumark@codeaurora.org>