ARM: dts: imx6ul-14x14-evk: Assign power supplies for magnetometer

On i.MX6UL 14x14 EVK board, mag3110's power is controlled by
sensor regulator, assign power supplies for mag3110 driver
to do power management.

Signed-off-by: Anson Huang <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

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

···
 	magnetometer@e {
 		compatible = "fsl,mag3110";
 		reg = <0x0e>;
+		vdd-supply = <&reg_sensors>;
+		vddio-supply = <&reg_sensors>;
 	};
 };