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>

arch/arm64/boot/dts/xilinx/zynqmp-ep108-clk.dtsi

@@ -11,7 +11,7 @@
  * the License, or (at your option) any later version.
  */
 
-&amba {
+/ {
 	misc_clk: misc_clk {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;