ARM: dts: rockchip: Enable HDMI CEC on rk3288-tinker-s

This patch enables HDMI CEC on Tinker Board S
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3288-tinker-s.dts

@@ -23,3 +23,8 @@ &emmc {
 	mmc-ddr-1_8v;
 	status = "okay";
 };
+
+&hdmi {
+	pinctrl-names = "default";
+	pinctrl-0 = <&hdmi_cec_c0>;
+};