arm64: dts: allwinner: h6: orangepi: Enable HDMI

Both, OrangePi One Plus and OrangePi Lite 2 have HDMI output. Enable it
in common DTSI.

Signed-off-by: Marcus Cooper <[e-mail]>
[patch split and commit message]
Signed-off-by: Jernej Skrabec <[e-mail]>
Reviewed-by: Christopher Obbard <[e-mail]>
Tested-by: Christopher Obbard <[e-mail]>
Signed-off-by: Maxime Ripard <[e-mail]>

arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi

···
 		stdout-path = "serial0:115200n8";
 	};
 
+	connector {
+		compatible = "hdmi-connector";
+		type = "a";
+		ddc-en-gpios = <&pio 7 2 GPIO_ACTIVE_HIGH>; /* PH2 */
+
+		port {
+			hdmi_con_in: endpoint {
+				remote-endpoint = <&hdmi_out_con>;
+			};
+		};
+	};
+
 	ext_osc32k: ext_osc32k_clk {
 		#clock-cells = <0>;
 		compatible = "fixed-clock";
···
 	};
 };
 
+&de {
+	status = "okay";
+};
+
 &ehci0 {
 	status = "okay";
 };
···
 &gpu {
 	mali-supply = <&reg_dcdcc>;
 	status = "okay";
+};
+
+&hdmi {
+	status = "okay";
+};
+
+&hdmi_out {
+	hdmi_out_con: endpoint {
+		remote-endpoint = <&hdmi_con_in>;
+	};
 };
 
 &mmc0 {