ARM: dts: rockchip: add act8846 supplies on rk3288-firefly

We defined bindings for the supply handling of act8846 regulators now, so
describe those on the firefly too.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3288-firefly.dtsi

@@ -246,6 +246,14 @@
 		pinctrl-0 = <&pmic_vsel>, <&pwr_hold>;
 		system-power-controller;
 
+		vp1-supply = <&vcc_sys>;
+		vp2-supply = <&vcc_sys>;
+		vp3-supply = <&vcc_sys>;
+		vp4-supply = <&vcc_sys>;
+		inl1-supply = <&vcc_sys>;
+		inl2-supply = <&vcc_sys>;
+		inl3-supply = <&vcc_20>;
+
 		regulators {
 			vcc_ddr: REG1 {
 				regulator-name = "vcc_ddr";