arm64: dts: allwinner: Enable DDC regulator for Beelink GS1

Beelink GS1 has a DDC I2C bus voltage shifter. This is actually missing
and video is limited to 1024x768 due to missing EDID information.

Add the DDC regulator in the device-tree.
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts

@@ -25,6 +25,7 @@ chosen {
 	connector {
 		compatible = "hdmi-connector";
 		type = "a";
+		ddc-en-gpios = <&pio 7 2 GPIO_ACTIVE_HIGH>; /* PH2 */
 
 		port {
 			hdmi_con_in: endpoint {