dt-bindings: firmware: xilinx: Sort node names (clock-controller)

Nodes should be sorted that's why move clock-controller to the top of list.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/ccb6bd5f4d1d28983c73497ada596e893fece499.1703161663.git.michal.simek@amd.comSigned-off-by: Michal Simek <michal.simek@amd.com>

Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.yaml

@@ -47,6 +47,15 @@ properties:
   "#power-domain-cells":
     const: 1
 
+  clock-controller:
+    $ref: /schemas/clock/xlnx,versal-clk.yaml#
+    description: The clock controller is a hardware block of Xilinx versal
+      clock tree. It reads required input clock frequencies from the devicetree
+      and acts as clock provider for all clock consumers of PS clocks.list of
+      clock specifiers which are external input clocks to the given clock
+      controller.
+    type: object
+
   gpio:
     $ref: /schemas/gpio/xlnx,zynqmp-gpio-modepin.yaml#
     description: The gpio node describes connect to PS_MODE pins via firmware
@@ -90,15 +99,6 @@ properties:
       vector.
     type: object
 
-  clock-controller:
-    $ref: /schemas/clock/xlnx,versal-clk.yaml#
-    description: The clock controller is a hardware block of Xilinx versal
-      clock tree. It reads required input clock frequencies from the devicetree
-      and acts as clock provider for all clock consumers of PS clocks.list of
-      clock specifiers which are external input clocks to the given clock
-      controller.
-    type: object
-
 required:
   - compatible