arm64: dts: rockchip: move rk3576 pinctrl node outside the soc node

arm64: dts: rockchip: move rk3576 pinctrl node outside the soc node

The non-mmio pinctrl node is not supposed to be inside the soc simple-bus
as dtc points out:

../arch/arm64/boot/dts/rockchip/rk3576.dtsi:2351.20-2417.5: Warning (simple_bus_reg): /soc/pinctrl: missing or empty reg/ranges property

Move the pinctrl node outside and adapt the indentation.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505150745.PQT9TLYX-lkp@intel.com/
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20250518220449.2722673-3-heiko@sntech.de