ARM: dts: msm: Add EUD device node for trinket

The EUD (Embedded USB Debugger) is a mini-USB hub implemented
on chip to support the USB-based debug and trace capabilities.
Add device tree node to support EUD on trinket based platforms.

Change-Id: Iec6016986d0d36f359a6dc40a9760e6c5f8125f0
Signed-off-by: Gaurav Kohli <gkohli@codeaurora.org>