dt-bindings: PCI: sifive,fu740-pcie: Fix include placement in DTS example

Coding style and common logic dictates that headers should not be
included in device nodes.  No functional impact.

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Reviewed-by: Manivannan Sadhasivam <[email protected]>
Reviewed-by: Rob Herring (Arm) <[email protected]>
Link: https://patch.msgid.link/[email protected]

Author: krzk

Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml

@@ -81,10 +81,10 @@ unevaluatedProperties: false
 
 examples:
   - |
+    #include <dt-bindings/clock/sifive-fu740-prci.h>
     bus {
         #address-cells = <2>;
         #size-cells = <2>;
-        #include <dt-bindings/clock/sifive-fu740-prci.h>
 
         pcie@e00000000 {
             compatible = "sifive,fu740-pcie";