ARM: dts: imx6qdl-sabreauto: Add sensors

The following sensors are on I2C3 on the baseboard:
* isil,isl29023 light sensor
* fsl,mag3110 magnetometer
* fsl,mma8451 accelerometer

Added under i2cmux/i2c@1 because they're not otherwise accessible.

These are all supported by iio with following configs:
* CONFIG_SENSORS_ISL29018
* CONFIG_MAG3110
* CONFIG_MMA8452

Tested with raw reads from iio sysfs.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6qdl-sabreauto.dtsi

@@ -155,6 +155,27 @@ max7310_c: gpio@34 {
 				gpio-controller;
 				#gpio-cells = <2>;
 			};
+
+			light-sensor@44 {
+				compatible = "isil,isl29023";
+				reg = <0x44>;
+				interrupt-parent = <&gpio5>;
+				interrupts = <17 IRQ_TYPE_EDGE_FALLING>;
+			};
+
+			magnetometer@e {
+				compatible = "fsl,mag3110";
+				reg = <0x0e>;
+				interrupt-parent = <&gpio2>;
+				interrupts = <29 IRQ_TYPE_EDGE_RISING>;
+			};
+
+			accelerometer@1c {
+				compatible = "fsl,mma8451";
+				reg = <0x1c>;
+				interrupt-parent = <&gpio6>;
+				interrupts = <31 IRQ_TYPE_LEVEL_LOW>;
+			};
 		};
 	};
 };