ARM: dts: mba6ulx: add missing vcc supplies to i2c devices

This fixes the warnings:
pca953x 3-0020: supply vcc not found, using dummy regulator
pca953x 3-0021: supply vcc not found, using dummy regulator
pca953x 3-0022: supply vcc not found, using dummy regulator
at24 3-0051: supply vcc 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/mba6ulx.dtsi

@@ -235,6 +235,7 @@ expander_out0: gpio-expander@20 {
 		reg = <0x20>;
 		gpio-controller;
 		#gpio-cells = <2>;
+		vcc-supply = <&reg_mba6ul_3v3>;
 	};
 
 	expander_in0: gpio-expander@21 {
@@ -248,6 +249,7 @@ expander_in0: gpio-expander@21 {
 		#interrupt-cells = <2>;
 		gpio-controller;
 		#gpio-cells = <2>;
+		vcc-supply = <&reg_mba6ul_3v3>;
 
 		enet1_int-hog {
 			gpio-hog;
@@ -267,6 +269,7 @@ expander_out1: gpio-expander@22 {
 		reg = <0x22>;
 		gpio-controller;
 		#gpio-cells = <2>;
+		vcc-supply = <&reg_mba6ul_3v3>;
 	};
 
 	analog_touch: touchscreen@41 {
@@ -300,6 +303,7 @@ se97b: eeprom@51 {
 		compatible = "nxp,se97b", "atmel,24c02";
 		reg = <0x51>;
 		pagesize = <16>;
+		vcc-supply = <&reg_mba6ul_3v3>;
 	};
 };