dt-bindings: phy: intel,combo-phy: restrict node name suffixes

Make the pattern matching node names a bit stricter to improve DTS
consistency. The pattern is restricted to:
1. Only one unit address or one -N suffix,
2. -N suffixes to decimal numbers.

Suggested-by: Rob Herring <[e-mail]>
Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Rob Herring <[e-mail]>
Reviewed-by: Tony Lindgren <[e-mail]>
Reviewed-by: Conor Dooley <[e-mail]>
Acked-by: Uwe Kleine-König <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

Documentation/devicetree/bindings/phy/intel,combo-phy.yaml

···
 
 properties:
   $nodename:
-    pattern: "combophy(@.*|-[0-9a-f])*$"
+    pattern: "combophy(@.*|-([0-9]|[1-9][0-9]+))?$"
 
   compatible:
     items: