arm64: dts: rockchip: enable pcie2 on rk3566-roc-pc

This patch adds nodes needed for pcie2
to work on rk3566-roc-pc

Signed-off-by: Furkan Kardame <f.kardame@manjaro.org>
Link: https://lore.kernel.org/r/20221026172152.64513-1-f.kardame@manjaro.org


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