ARM: dts: msm: Enable gpios to support HiFi headphones on 8996 target

HiFi(High Fidelity) headphones path needs lineout
paths to be connected to headphone path. This needs
switching between headphone path and lineout path through
gpios. Add support to enable gpios for HiFi headphones
functionality on 8996 target.

Change-Id: If96d365cf5c2ca207fbde81a42ce5b599546ebb3
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>