dt-bindings: net: pse-pd: Allow -N suffix for ethernet-pse node names

Extend the pattern matching for PSE-PD controller nodes to allow -N
suffixes. This enables the use of multiple "ethernet-pse" nodes without the
need for a "reg" property.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Documentation/devicetree/bindings/net/pse-pd/pse-controller.yaml

@@ -16,7 +16,7 @@ maintainers:
 
 properties:
   $nodename:
-    pattern: "^ethernet-pse(@.*)?$"
+    pattern: "^ethernet-pse(@.*|-([0-9]|[1-9][0-9]+))?$"
 
   "#pse-cells":
     description: