arm64: dts: mediatek: mt8195-cherry: Enable Mali-G57 GPU

Enable the Mali-G57 found on this platform with the open-source
Panfrost driver.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20230301095523.428461-17-angelogioacchino.delregno@collabora.comSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi

@@ -238,6 +238,11 @@ dptx_out: endpoint {
 	};
 };
 
+&gpu {
+	status = "okay";
+	mali-supply = <&mt6315_7_vbuck1>;
+};
+
 &i2c0 {
 	status = "okay";