ASoC: msm: correct us_euro gpio handling

For 8x16, modify us_euro gpio handling as per pinctrl framework.
As 8x39 is using  and legacy mbhc driver where detection
happens in SW, dce_z and sta_z values are 0 if pinctrl state is changed to
active everytime. So select default pinctrl state as active.

CRs-Fixed: 698473
Change-Id: I42d17c807201aac880763788b1871104484b8c79
Signed-off-by: Yeleswarapu Nagaradhesh <nagaradh@codeaurora.org>