ARM: dts: rockchip: add system-power-controller to act8846 on radxarock
ARM: dts: rockchip: add system-power-controller to act8846 on radxarock

The act8846 is the main pmic and system-power-controller on radxarock boards,
so add the necessary property.

Signed-off-by: Michael Niewoehner <40aee9d9bf2a694960cd49041159672c37603472@stud.hs-offenburg.de>
Signed-off-by: Heiko Stuebner <9ab5f52a1ca0bcf4f70d6d9008e02f6134b5b8f2@sntech.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs