ARM: dts: msm: Map MPM pins for DP&DM to hs_phy_irq for msm8996

MPM driver supports mapping multiple MPM pins to single irq for remote
wakeup. Hence map both MPM pins for DP and DM line state changes to
hs_phy_irq.

Change-Id: I018e4258cf0820328c6b77cd32e0d32a0de57582
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
Signed-off-by: Maulik Shah <mkshah@codeaurora.org>