ARM: dts: imx6q-utilite-pro: add HDMI CEC pinctrl

On the Utilite Pro the CEC line is wired up to the HDMI connector.
Add the required pinctrl setting.
Signed-off-by: NChristopher Spinrath <christopher.spinrath@rwth-aachen.de>
Reviewed-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6q-utilite-pro.dts

@@ -188,6 +188,8 @@
 /delete-node/&hdmi_mux_1;
 
 &hdmi {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_hdmicec>;
 	ddc-i2c-bus = <&i2c2>;
 	status = "okay";
 };
@@ -211,6 +213,12 @@
 		>;
 	};
 
+	pinctrl_hdmicec: hdmicecgrp {
+		fsl,pins = <
+			MX6QDL_PAD_KEY_ROW2__HDMI_TX_CEC_LINE 0x1f8b0
+		>;
+	};
+
 	pinctrl_hpd: hpdgrp {
 		fsl,pins = <
 			MX6QDL_PAD_GPIO_4__GPIO1_IO04 0x1b0b0