ARM: dts: msm: Add DP AUX gpio config for sdmmagpie QRD

QRD device use a switch chip, it was controlled by two
gpios. So enable the right gpip configure. Add a new
property "qcom,dp-gpio-aux-switch" to support it.

Change-Id: I1fc2686324707fb7933c6ae5a90fce581d71ab1c
Signed-off-by: Yuan Zhao <yzhao@codeaurora.org>