arm64: dts: rockchip: Fix gmac failure of rgmii-id from rk3566-roc-pc

Lan does not work on rgmii-id, most rk356x devices lan
is being switched to rgmii.

Signed-off-by: Furkan Kardame <f.kardame@manjaro.org>
Link: https://lore.kernel.org/r/20221010190142.18340-2-f.kardame@manjaro.org


Signed-off-by: Heiko Stuebner <heiko@sntech.de>