arm64: dts: qcom: sdx75: Fix up the USB interrupt description

arm64: dts: qcom: sdx75: Fix up the USB interrupt description

Commit 53c6d854be4e ("dt-bindings: usb: dwc3: Clean up hs_phy_irq in binding")
reworked the dt-bindings to accurately represent the hardware.

Execute the second half of the cleanup by wiring up the missing
pwr_event IRQ and adjusting the entry order.

Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250306-topic-dt_bindings_fixups-v1-5-0c84aceb0ef9@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>