ARM: dts: rockchip: Add HDMI support to rk3288-veyron-analog-audio

All boards using rk3288-veyron-analog-audio.dtsi have HDMI audio.
Specify the support of HDMI audio on machine driver using
rockchip,hdmi-codec property so machine driver creates HDMI audio device.
Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
Link: https://lore.kernel.org/r/20191028071930.145899-6-cychiang@chromium.orgSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3288-veyron-analog-audio.dtsi

@@ -17,6 +17,7 @@ sound {
 		rockchip,hp-det-gpios = <&gpio6 RK_PA5 GPIO_ACTIVE_HIGH>;
 		rockchip,mic-det-gpios = <&gpio6 RK_PB3 GPIO_ACTIVE_LOW>;
 		rockchip,headset-codec = <&headsetcodec>;
+		rockchip,hdmi-codec = <&hdmi>;
 	};
 };