arm64: zynqmp: Move nodes which have no reg property out of bus

Nodes without reg properties shouldn't be placed in amba node.
Move them out.

Warnings:
arch/arm64/boot/dts/xilinx/zynqmp-ep108.dtb: Warning (simple_bus_reg):
Node /amba/misc_clk missing or empty reg/ranges property
arch/arm64/boot/dts/xilinx/zynqmp-ep108.dtb: Warning (simple_bus_reg):
Node /amba/i2c_clk missing or empty reg/ranges property
arch/arm64/boot/dts/xilinx/zynqmp-ep108.dtb: Warning (simple_bus_reg):
Node /amba/sata_clk missing or empty reg/ranges property
arch/arm64/boot/dts/xilinx/zynqmp-ep108.dtb: Warning (simple_bus_reg):

Signed-off-by: Michal Simek <michal.simek@xilinx.com>