arm64: dts: rockchip: refactor common rk3588-orangepi-5.dtsi

Orange Pi now has multiple SBCs using the RK3588.

Refactor the common parts of the Orange Pi 5 Plus DTS so it can be
shared with the 5 Max and the 5 Ultra.

Signed-off-by: Jimmy Hon <honyuenkwun@gmail.com>
Link: https://lore.kernel.org/r/20250109051619.1825-2-honyuenkwun@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: jimmyhon