ARM: dts: msm: Add EUD reference with dwc3 device node on sdm845

USB driver state machine needs to handle EUD based spoof detach/attach
event to stop/start USB peripheral mode when EUD is active. This change
adds phandle of EUD device node with dwc3 device node which is used by
USB driver to register with extcon framework to receive notification
from EUD summary driver.

Change-Id: If08a2559237ba7860ffb73f318d35f3de4f3b841
Signed-off-by: Mayank Rana <mrana@codeaurora.org>