ASoC: msm8x16-wcd: update for new Sub System Restart design.

Update codec driver to reduce the time for wait to check Q6 core
is ready.
Disable all sound end devices(headset, earpiece and speaker)
during codec down and codec up to reduce the noise output
during Sub System Restart time frame.

CRs-Fixed: 661491
Change-Id: I06f7124dda56bf867df32c3a03a63e1ee0e2bd94
Signed-off-by: Santosh Mardi <gsantosh@codeaurora.org>