ARM: dts: imx6ul-pico: Add the imx6ul-pico-pi variant

The imx6ul-pico-pi contains a imx6ul-pico SoM and a pi baseboard:
https://www.technexion.com/products/pico-baseboards/detail/PICO-PI

Add support for it.

Signed-off-by: Fabio Estevam <[e-mail]>
Signed-off-by: Otavio Salvador <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

arch/arm/boot/dts/Makefile

···
 	imx6ul-liteboard.dtb \
 	imx6ul-opos6uldev.dtb \
 	imx6ul-pico-hobbit.dtb \
+	imx6ul-pico-pi.dtb \
 	imx6ul-tx6ul-0010.dtb \
 	imx6ul-tx6ul-0011.dtb \
 	imx6ul-tx6ul-mainboard.dtb \

arch/arm/boot/dts/imx6ul-pico-pi.dts

···
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+//
+// Copyright 2015 Technexion Ltd.
+//
+// Author: Wig Cheng  <[e-mail]>
+//	   Richard Hu <[e-mail]>
+//	   Tapani Utriainen <[e-mail]>
+/dts-v1/;
+
+#include "imx6ul-pico.dtsi"
+/ {
+	model = "TechNexion PICO-IMX6UL and PI baseboard";
+	compatible = "technexion,imx6ul-pico-pi", "fsl,imx6ul";
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio_leds>;
+
+		led {
+			label = "gpio-led";
+			gpios = <&gpio4 20 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	sound {
+		compatible = "fsl,imx-audio-sgtl5000";
+		model = "imx6ul-sgtl5000";
+		audio-cpu = <&sai1>;
+		audio-codec = <&sgtl5000>;
+		audio-routing =
+			"LINE_IN", "Line In Jack",
+			"MIC_IN", "Mic Jack",
+			"Mic Jack", "Mic Bias",
+			"Headphone Jack", "HP_OUT";
+	};
+
+	sys_mclk: clock-sys-mclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <24576000>;
+	};
+};
+
+&i2c2 {
+	clock_frequency = <100000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2>;
+	status = "okay";
+
+	sgtl5000: codec@a {
+		reg = <0x0a>;
+		compatible = "fsl,sgtl5000";
+		clocks = <&sys_mclk>;
+		VDDA-supply = <&reg_2p5v>;
+		VDDIO-supply = <&reg_3p3v>;
+	};
+};
+
+&i2c3 {
+	clock_frequency = <100000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c3>;
+	status = "okay";
+
+	polytouch: touchscreen@38 {
+		compatible = "edt,edt-ft5x06";
+		reg = <0x38>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <29 IRQ_TYPE_EDGE_FALLING>;
+		reset-gpios = <&gpio4 24 GPIO_ACTIVE_LOW>;
+		touchscreen-size-x = <800>;
+		touchscreen-size-y = <480>;
+	};
+};
+
+&iomuxc {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_hog>;
+
+	pinctrl_hog: hoggrp {
+		fsl,pins = <
+			MX6UL_PAD_CSI_VSYNC__GPIO4_IO19		0x10b0
+			MX6UL_PAD_CSI_DATA00__GPIO4_IO21	0x10b0
+			MX6UL_PAD_CSI_DATA01__GPIO4_IO22	0x10b0
+			MX6UL_PAD_CSI_DATA02__GPIO4_IO23	0x10b0
+			MX6UL_PAD_UART1_CTS_B__GPIO1_IO18	0x10b0
+			MX6UL_PAD_SNVS_TAMPER2__GPIO5_IO02	0x10b0
+		>;
+	};
+
+	pinctrl_gpio_leds: gpioledsgrp {
+		fsl,pins = <
+			MX6UL_PAD_CSI_HSYNC__GPIO4_IO20		0x10b0
+		>;
+	};
+};

arch/arm/boot/dts/imx6ul-pico.dtsi

···
 		regulator-max-microvolt = <3300000>;
 		startup-delay-us = <200000>;
 	};
-
-	sound {
-		compatible = "fsl,imx-audio-sgtl5000";
-		model = "imx6ul-sgtl5000";
-		audio-cpu = <&sai1>;
-		audio-codec = <&codec>;
-		audio-routing =
-			"LINE_IN", "Line In Jack",
-			"MIC_IN", "Mic Jack",
-			"Mic Jack", "Mic Bias",
-			"Headphone Jack", "HP_OUT";
-	};
-
-	sys_mclk: clock-sys-mclk {
-		compatible = "fixed-clock";
-		#clock-cells = <0>;
-		clock-frequency = <24576000>;
-	};
 };
 
 &can1 {
···
 			};
 		};
 	};
-};
-
-&i2c2 {
-	clock_frequency = <100000>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_i2c2>;
-	status = "okay";
-};
-
-&i2c3 {
-	clock_frequency = <100000>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_i2c3>;
-	status = "okay";
 };
 
 &lcdif {