ARM: dts: am335x-bone-common: Add vcc-supply for on-board eeprom

The on-board eeprom on beaglebone series has a power supply from
VDD_3V3A, add that to dts to reduce dummy regulator warning.
Signed-off-by: Shengyu Qu <wiagn233@outlook.com>
Message-ID: <TY3P286MB2611CDC84604B11570B4A8D2980FA@TY3P286MB2611.JPNP286.PROD.OUTLOOK.COM>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/ti/omap/am335x-bone-common.dtsi

@@ -219,6 +219,7 @@ tps: tps@24 {
 	baseboard_eeprom: baseboard_eeprom@50 {
 		compatible = "atmel,24c256";
 		reg = <0x50>;
+		vcc-supply = <&ldo4_reg>;
 
 		#address-cells = <1>;
 		#size-cells = <1>;