ARM: dts: sun8i: sina33: enable battery power supply subnode

The Sinlinx SinA33 has an AXP223 PMIC and a battery connector, thus, we
enable the battery power supply subnode in its Device Tree.
Signed-off-by: NQuentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun8i-a33-sinlinx-sina33.dts

@@ -196,6 +196,10 @@
 	status = "okay";
 };
 
+&battery_power_supply {
+	status = "okay";
+};
+
 &reg_aldo1 {
 	regulator-always-on;
 	regulator-min-microvolt = <3000000>;