ASoC: msm8x16-wcd: change ear boost enable/disable sequence

The present ear boost enable sequence enables the boost clock
and the disable sequence disables the bypass before disabling
the boost module. The change does not enable the boost clock
and the boost module is disabled before the bypass is disabled.

CRs-Fixed: 673800
Change-Id: Id347cc816b4985220bb76b6f6baea88ade343302
Signed-off-by: Aravind Kumar <akumark@codeaurora.org>