dt-bindings: net: mediatek,net: Correct bindings for MT7981

Different SoCs have different numbers of Wireless Ethernet
Dispatch (WED) units:
- MT7981: Has 1 WED unit
- MT7986: Has 2 WED units
- MT7988: Has 2 WED units

Update the binding to reflect these hardware differences. The MT7981
also uses infracfg for PHY switching, so allow that property.

Signed-off-by: Sjoerd Simons <sjoerd@collabora.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20251115-openwrt-one-network-v4-6-48cbda2969ac@collabora.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Documentation/devicetree/bindings/net/mediatek,net.yaml

@@ -112,7 +112,7 @@ properties:
 
   mediatek,wed:
     $ref: /schemas/types.yaml#/definitions/phandle-array
-    minItems: 2
+    minItems: 1
     maxItems: 2
     items:
       maxItems: 1
@@ -249,6 +249,9 @@ allOf:
           minItems: 1
           maxItems: 1
 
+        mediatek,wed:
+          minItems: 2
+
         mediatek,wed-pcie: false
     else:
       properties:
@@ -338,12 +341,13 @@ allOf:
             - const: netsys0
             - const: netsys1
 
-        mediatek,infracfg: false
-
         mediatek,sgmiisys:
           minItems: 2
           maxItems: 2
 
+        mediatek,wed:
+          maxItems: 1
+
   - if:
       properties:
         compatible:
@@ -385,6 +389,9 @@ allOf:
           minItems: 2
           maxItems: 2
 
+        mediatek,wed:
+          minItems: 2
+
   - if:
       properties:
         compatible:
@@ -429,6 +436,19 @@ allOf:
             - const: xgp2
             - const: xgp3
 
+        mediatek,wed:
+          minItems: 2
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: ralink,rt5350-eth
+    then:
+      properties:
+        mediatek,wed:
+          minItems: 2
+
 patternProperties:
   "^mac@[0-2]$":
     type: object