board: rockchip: Add Xunlong Orange Pi 5 Plus

Xunlong Orange Pi 5 Plus is a single-board computer based on the
Rockchip RK3588 SoC. The board provides abundant interfaces, including
two HDMI output ports, one HDMI input port, two 2.5G Ethernet ports,
M.2 M-Key slot, M.2 E-Key slot, two USB 3.0, two USB 2.0, and two Type-C.

Features tested on a Orange Pi 5 Plus 4GB v1.2:
- SD-card boot
- eMMC boot
- SPI Flash boot
- PCIe/NVMe
- USB 2.0 host
- Ethernet

Device tree is imported from linux v6.7-rockchip-dts64-1 tag.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index fd99bb7..c1a7605 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -193,6 +193,7 @@
 	rk3588-evb1-v10.dtb \
 	rk3588-nanopc-t6.dtb \
 	rk3588s-orangepi-5.dtb \
+	rk3588-orangepi-5-plus.dtb \
 	rk3588s-rock-5a.dtb \
 	rk3588-rock-5b.dtb