ASoC: msm8x16-wcd: disable micbias pullup mode during recording

If both micbias and pullup are enabled it will result in
fake button press interrupt. Prevent enabling micbias and
pull up together to avoid fake button interrupts.
Also correct handling of MICBIAS and CS.

CRs-Fixed: 717997
Change-Id: I554659e1c1d6876c8b2b0ac4b70ee5f814c4fcbe
Signed-off-by: Yeleswarapu Nagaradhesh <nagaradh@codeaurora.org>