arm64: dts: add device tree for Traverse Ten64 (LS1088A)

The Traverse Technologies Ten64 is a Mini-ITX form factor
networking board using the NXP LS1088A SoC.

This device tree only describes features which the mainline
kernel currently has support for, such as some I2C-connected
devices that are not described at present.

System documentation may be found at ten64doc.traverse.com.au

Signed-off-by: Mathew McBride <matt@traverse.com.au>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com> # for the MAC/PHY
Signed-off-by: Shawn Guo <shawnguo@kernel.org>