ARM: dts: imx6ul-14x14-evk: Add sensors' GPIO regulator

On i.MX6UL 14x14 EVK board, sensors' power are controlled
by GPIO5_IO02, add GPIO regulator for sensors to manage
their power.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6ul-14x14-evk.dtsi

@@ -30,6 +30,16 @@ reg_sd1_vmmc: regulator-sd1-vmmc {
 		enable-active-high;
 	};
 
+	reg_sensors: regulator-sensors {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_sensors_reg>;
+		regulator-name = "sensors-supply";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio5 2 GPIO_ACTIVE_LOW>;
+	};
+
 	reg_can_3v3: regulator-can-3v3 {
 		compatible = "regulator-fixed";
 		regulator-name = "can-3v3";
@@ -450,6 +460,12 @@ MX6UL_PAD_SNVS_TAMPER4__GPIO5_IO04	0x17059
 		>;
 	};
 
+	pinctrl_sensors_reg: sensorsreggrp {
+		fsl,pins = <
+			MX6UL_PAD_SNVS_TAMPER2__GPIO5_IO02	0x1b0b0
+		>;
+	};
+
 	pinctrl_pwm1: pwm1grp {
 		fsl,pins = <
 			MX6UL_PAD_GPIO1_IO08__PWM1_OUT   0x110b0