clk: rockchip: move px30 critical clocks to correct clock controller

The clocks in the px30 critical clock section are from the regular cru not
the pmucru, so move them to the correct place.

Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Link: https://lore.kernel.org/r/20190917081903.25139-3-heiko@sntech.de