ARM: dts: imx6qdl-sabresd: add regulator control for isl29023 sensor

The isl29023 light sensor driver has supported regulator control,
assign the power supply for isl29023 to enable the control.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

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

@@ -449,6 +449,7 @@ light-sensor@44 {
 		pinctrl-0 = <&pinctrl_i2c3_isl29023_int>;
 		interrupt-parent = <&gpio3>;
 		interrupts = <9 IRQ_TYPE_EDGE_FALLING>;
+		vcc-supply = <&reg_sensors>;
 	};
 };