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

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

CRs-Fixed: 1060581
Change-Id: Icca3719b9cf1657b4e550e19ca3b6566684c1783
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>