ASoC: msm: Update gnd-mic swap callback function

Update mbhc config gnd-mic swap callback function so
as to detect euro headset when it is plugged into
a US headset jack.

Change-Id: I62280e3b919df43d5afe5ed7be61d9f83ab833b8
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>