ARM: dts: ccimx6ulsbcpro: Add support for Goodix touch controller

The ConnectCore 6UL SBC Pro has an AUO/Goodix LCD accessory kit that is
connected on the LVDS interface through an on-board LVDS transceiver.

This change adds support for the touch interface.
Signed-off-by: Alex Gonzalez <alex.gonzalez@digi.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6ul-ccimx6ulsbcpro.dts

@@ -117,6 +117,19 @@ emmc-usd-mux {
 	};
 };
 
+&i2c1 {
+	touchscreen@14 {
+		compatible = "goodix,gt911";
+		reg = <0x14>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_goodix_touch>;
+		interrupt-parent = <&gpio5>;
+		interrupts = <2 IRQ_TYPE_EDGE_RISING>;
+		irq-gpios = <&gpio5 2 GPIO_ACTIVE_HIGH>;
+		status = "okay";
+	};
+};
+
 &lcdif {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_lcdif_dat0_17
@@ -290,6 +303,12 @@ MX6UL_PAD_UART2_RTS_B__FLEXCAN2_RX	0x1b020
 		>;
 	};
 
+	pinctrl_goodix_touch: goodixgrp{
+		fsl,pins = <
+			MX6UL_PAD_SNVS_TAMPER2__GPIO5_IO02	0x1020
+		>;
+	};
+
 	pinctrl_lcdif_dat0_17: lcdifdatgrp0-17 {
 		fsl,pins = <
 			MX6UL_PAD_LCD_DATA00__LCDIF_DATA00	0x79