ARM: dts: msm: device tree changes for QPDI enhancement on 8937

This patch adds the device tree entries that enable the gpio interrupt
line going to the PMIC which inturn enables the regulators driving the
SDC slot on hotplug insertion of debug card into the slot.

Change-Id: I68735ff23fcc1833c14f4846397ee2d349f930c8
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>