ARM: dts: qcom: Update sec_mi2s gpio pinctrl for sdxpoorwills

No SCK and WS observed at secondary mi2s lines,
To fix this, Update the secondary mi2s gpio pin-control
function name for sdxpoorwills.

Change-Id: I586b34898220b5417773de7e6ed105cc9c5982ee
Signed-off-by: Anurag Chouhan <achouhan@codeaurora.org>