ARM: dts: msm: Use correct HS PHY IRQ for msm8996 secondary USB

The driver change in commit 96f92e28 ("usb: dwc3-msm: Use hs
phy and ss phy irq as wake up source") favored using hs_phy_irq
over pwr_event_irq to wake up USB out of suspend. This change
revealed the wrong IRQ was used for the secondary USB2s instance
on msm8996. Use the correct HS PHY IRQ number which maps to QUSB.
Map this IRQ to the corresponding MPM wakeup pin as well.

Change-Id: Ibd56c10c3c96f88d964f7f5f8a0fe9b590c522c5
Signed-off-by: Jack Pham <jackp@codeaurora.org>