ARM: dts: imx6qdl-tqma6x: Add missing vs-supply for lm75

Fixes the warning:
lm75 0-0048: supply vs not found, using dummy regulator
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/nxp/imx/imx6qdl-tqma6a.dtsi

@@ -30,6 +30,7 @@ pmic: pmic@8 {
 	sensor@48 {
 		compatible = "national,lm75";
 		reg = <0x48>;
+		vs-supply = <&reg_3p3v>;
 	};
 
 	eeprom@50 {

arch/arm/boot/dts/nxp/imx/imx6qdl-tqma6b.dtsi

@@ -23,6 +23,7 @@ pmic: pmic@8 {
 	sensor@48 {
 		compatible = "national,lm75";
 		reg = <0x48>;
+		vs-supply = <&reg_3p3v>;
 	};
 
 	eeprom@50 {