ARM: dts: msm: Use correct interrupt number for QCS405

There are two sets of interrupts from PHY, hs_phy_irq
and usb2_phy_irq. Use the usb2_phy_irq which are
triggered with PHY CSR programming.

Change-Id: I9eb4ae11a0d0d3df9ebfbb7535bfb0f8ced196f6
Signed-off-by: Sriharsha Allenki <sallenki@codeaurora.org>