arm64: dts: rockchip: use generic node name for pmucru on rk3399

The node names should be generic, so fix this for the rk3399 pmucru node
and rename it to "clock-controller".

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20220329150742.22093-5-jbx6244@gmail.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>