Add missing supply for LM75. Fixes the kernel warning:
  lm75 0-0048: supply vs not found, using dummy regulator
Fixes: c9d4affbe60a ("ARM: dts: imx: tqma7: add lm75a sensor (rev. 01xxx)")
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Markus Niebel <markus.niebel@ew.tq-group.com>
Reviewed-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
        lm75a: temperature-sensor@48 {
                compatible = "national,lm75a";
                reg = <0x48>;
+               vs-supply = <&vgen4_reg>;
        };
 
        /* NXP SE97BTP with temperature sensor + eeprom, TQMa7x 02xx */