ARM: dts: mmp3-dell-ariel: Enable the GPU

Enable the 2D (GC300) and the 3D (GC2000) GPUs cores.

Link: https://lore.kernel.org/r/20200718205019.184927-14-lkundrak@v3.sk
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/mmp3-dell-ariel.dts

@@ -114,3 +114,11 @@
 	cs-gpios = <&gpio 56 GPIO_ACTIVE_LOW>;
 	status = "okay";
 };
+
+&gpu_2d {
+	status = "okay";
+};
+
+&gpu_3d {
+	status = "okay";
+};