ARM: dts: sun4i: gemei-g9: Use reg_ldo2 instead of reg_vcc3v0

ADC seems to be using ldo2 for reference voltage.
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun4i-a10-gemei-g9.dts

@@ -112,7 +112,7 @@ bma250@18 {
 };
 
 &lradc {
-	vref-supply = <&reg_vcc3v0>;
+	vref-supply = <&reg_ldo2>;
 
 	status = "okay";