ARM: dts: msm: Add a default pinctrl mode for atoll QRD

Hardware team asked to set the GPIO55 to NO_PULL by default.
Since SDE DP driver did not set the GPIO as default mode, so
add a pinctrl default mode for QRD.

Change-Id: I79e2121795c7601dce6a9dc5983fa84451f31f1a
Signed-off-by: Yuan Zhao <yzhao@codeaurora.org>