arm64: dts: ti: k3-am654-icssg2: add ICSSG2 Ethernet support

ICSSG2 provides dual Gigabit Ethernet support.
Add ICSSG2 ethernet node to an overlay k3-am654-icssg2.dtso

Reviewed-by: Andrew Davis <afd@ti.com>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Link: https://lore.kernel.org/r/20231020051937.3709871-3-danishanwar@ti.com


Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>