ARM: dts: rockchip: Add stdout-path for rk3036 kylin

Add stdout-path to get a uart console when system boot.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Link: https://lore.kernel.org/r/20231218105523.2478315-3-andyshrk@163.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rockchip/rk3036-kylin.dts

@@ -8,6 +8,10 @@ / {
 	model = "Rockchip RK3036 KylinBoard";
 	compatible = "rockchip,rk3036-kylin", "rockchip,rk3036";
 
+	chosen {
+		stdout-path = "serial2:115200n8";
+	};
+
 	memory@60000000 {
 		device_type = "memory";
 		reg = <0x60000000 0x20000000>;