arm64: dts: rockchip: Add chasis-type for Powkiddy rk3566 devices

Add the optional node of chasis-type for Powkiddy RK3566 based
devices.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Link: https://lore.kernel.org/r/20240325175133.19393-2-macroalpha82@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3566-powkiddy-rk2023.dtsi

@@ -10,6 +10,8 @@
 #include "rk3566.dtsi"
 
 / {
+	chassis-type = "handset";
+
 	aliases {
 		mmc1 = &sdmmc0;
 		mmc2 = &sdmmc1;

arch/arm64/boot/dts/rockchip/rk3566-powkiddy-x55.dts

@@ -11,6 +11,7 @@
 
 / {
 	model = "Powkiddy x55";
+	chassis-type = "handset";
 	compatible = "powkiddy,x55", "rockchip,rk3566";
 
 	aliases {