arm64: dts: renesas: rzv2mevk2: Enable ethernet

Enable Ethernet interface on RZ/V2M EVK.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20220520100736.15182-1-phil.edworthy@renesas.com


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>