Add a DT node example for ENETC v4 device.

Signed-off-by: Wei Fang <wei.fang@nxp.com>

---
v2 changes:
new patch
v3 changes:
1. Rename the subject
2. Remove nxp,netc-timer property and use ptp-timer in the example
---
 .../devicetree/bindings/net/fsl,enetc.yaml        | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/fsl,enetc.yaml b/Documentation/devicetree/bindings/net/fsl,enetc.yaml
index ca70f0050171..a545b54c9e5d 100644
--- a/Documentation/devicetree/bindings/net/fsl,enetc.yaml
+++ b/Documentation/devicetree/bindings/net/fsl,enetc.yaml
@@ -86,3 +86,18 @@ examples:
             };
         };
     };
+  - |
+    pcie {
+      #address-cells = <3>;
+      #size-cells = <2>;
+
+      ethernet@0,0 {
+          compatible = "pci1131,e101";
+          reg = <0x000000 0 0 0 0>;
+          clocks = <&scmi_clk 102>;
+          clock-names = "ref";
+          phy-handle = <&ethphy0>;
+          phy-mode = "rgmii-id";
+          ptp-timer = <&netc_timer>;
+      };
+    };
-- 
2.34.1