ASoC: msm: add support for MIC-GND swap switch

If the board has a switch to swap the GND and MIC connections for
headset jack, enable the support to flip the switch through gpio
to swap GND and MIC.

CRs-Fixed: 642944
Change-Id: Ifca2c10ef7789925f1c720a79088a376b4a0adcb
Signed-off-by: Simmi Pateriya <simmip@codeaurora.org>