dt-bindings: PCI: xilinx-nwl: Modify ECAM size in the DT example

Update ECAM size in the devicetree example to allow for the discovery of
up to 256 buses.

[kwilczynski: commit log]
Link: https://lore.kernel.org/linux-pci/20231016051102.1180432-3-thippeswamy.havalige@amd.com
Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>

Author: Thippeswamy Havalige

Documentation/devicetree/bindings/pci/xlnx,nwl-pcie.yaml

@@ -118,7 +118,7 @@ examples:
             compatible = "xlnx,nwl-pcie-2.11";
             reg = <0x0 0xfd0e0000 0x0 0x1000>,
                   <0x0 0xfd480000 0x0 0x1000>,
-                  <0x80 0x00000000 0x0 0x1000000>;
+                  <0x80 0x00000000 0x0 0x10000000>;
             reg-names = "breg", "pcireg", "cfg";
             ranges = <0x02000000 0x0 0xe0000000 0x0 0xe0000000 0x0 0x10000000>,
                      <0x43000000 0x00000006 0x0 0x00000006 0x0 0x00000002 0x0>;