arm64: dts: rockchip: enable mali on Rock Pi 4

Enable the mali gpu node.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dts

@@ -157,6 +157,11 @@ &gmac {
 	status = "okay";
 };
 
+&gpu {
+	mali-supply = <&vdd_gpu>;
+	status = "okay";
+};
+
 &hdmi {
 	pinctrl-names = "default";
 	pinctrl-0 = <&hdmi_cec>;