arm64: dts: rockchip: Add BigTreeTech CB2 and Pi2

BigTreeTech CB2 and Pi2 share a lot of hardware configuration, so a
common dtsi file was used to define common nodes and properties. This is
similar to how BigTreeTech CB1 and Pi are implemented.

Signed-off-by: Ivan Sergeev <ivan8215145640@gmail.com>
Link: https://lore.kernel.org/r/20250106-bigtreetech-cb2-v7-2-565567e2c0a4@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: JohnTheCoolingFan

arch/arm64/boot/dts/rockchip/Makefile

@@ -111,6 +111,8 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-box-demo.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-lckfb-tspi.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-lubancat-1.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-nanopi-r3s.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-bigtreetech-cb2-manta.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-bigtreetech-pi2.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-bpi-r2-pro.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-evb1-v10.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-fastrhino-r66s.dtb

arch/arm64/boot/dts/rockchip/rk3566-bigtreetech-cb2-manta.dts

@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+/dts-v1/;
+
+#include "rk3566-bigtreetech-cb2.dtsi"
+
+/ {
+	model = "BigTreeTech CB2";
+	compatible = "bigtreetech,cb2-manta", "bigtreetech,cb2", "rockchip,rk3566";
+};