ARM: dts: msm: disable the GPIO 2 device on PMD9635

PMIC GPIO 2 is not owned by the high level OS and may cause an access
violation. Disable it so that the qpnp-pin driver does not probe and
attempt to write to the GPIO 2 peripheral.

Change-Id: I7cf7962378ae3cbe3addfec701932b1b90295fd8
Signed-off-by: Xiaozhe Shi <xiaozhes@codeaurora.org>