arm64: dts: rockchip: Enable the NPU on quartzpro64

Enable the nodes added in a previous commit to the rk3588s device tree.

v2:
- Split nodes (Sebastian Reichel)
- Sort nodes (Sebastian Reichel)
- Add board regulators (Sebastian Reichel)

Signed-off-by: Tomeu Vizoso <tomeu@tomeuvizoso.net>