ARM: dts: imx7d-sdb: Add sht11 Click Board support

The imx7d-sdb has a mickro bus connector that can be connected to a
Sensirion SHT11 click board (temperature and humidity sensor):

https://shop.mikroe.com/click/sensors/sht1x

Add a new device tree file to describe such hardware.
Signed-off-by: NMarco Franchi <marco.franchi@nxp.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/Makefile

@@ -458,6 +458,7 @@ dtb-$(CONFIG_SOC_IMX7D) += \
 	imx7d-nitrogen7.dtb \
 	imx7d-sbc-imx7.dtb \
 	imx7d-sdb.dtb \
+	imx7d-sdb-sht11.dtb \
 	imx7s-colibri-eval-v3.dtb \
 	imx7s-warp.dtb
 dtb-$(CONFIG_SOC_LS1021A) += \

arch/arm/boot/dts/imx7d-sdb-sht11.dts

+/*
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; either version 2 of the
+ *     License, or (at your option) any later version.
+ *
+ *     This file is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "imx7d-sdb.dts"
+
+/ {
+	sensor {
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_sensor>;
+		compatible = "sensirion,sht15";
+		clk-gpios = <&gpio4 12 0>;
+		data-gpios = <&gpio4 13 0>;
+		vcc-supply = <&reg_sht15>;
+	};
+
+	reg_sht15: regulator-sht15 {
+		compatible = "regulator-fixed";
+		regulator-name = "reg_sht15";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+};
+
+&i2c3 {
+	status = "disabled";
+};
+
+&iomuxc {
+	pinctrl_sensor: sensorgrp {
+		fsl,pins = <
+			MX7D_PAD_I2C3_SDA__GPIO4_IO13	0x4000007f
+			MX7D_PAD_I2C3_SCL__GPIO4_IO12	0x4000007f
+		>;
+	};
+};