[PATCH] dt-bindings: net: add nvmem-consumer reference to network-class

The nvmem-cells and nvmem-cell-names properties are used to supply MAC
addresses to both wired and wireless network controllers. The wired
hierarchy already allows them through ethernet-controller.yaml, but the
wireless hierarchy (wireless-controller.yaml -> network-class.yaml)
does not. As a result, brcm,bcm4329-fmac nodes using nvmem (e.g.
bcm4709-linksys-ea9200.dts) failed dtbs_check with:

    Unevaluated properties are not allowed ('nvmem-cell-names',
    'nvmem-cells' were unexpected)

Each wireless driver otherwise has to add the nvmem-consumer reference
individually (qca,ath9k and mediatek,mt76 already declare their own
nvmem-cells/nvmem-cell-names).

Add the nvmem-consumer reference to network-class.yaml so all network
nodes inherit the properties at once. Wired controllers keep the tighter
single-cell, mac-address-only constraints via ethernet-controller.yaml,
which still apply alongside the relaxed class-level properties.

Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <[email protected]>
---
 Documentation/devicetree/bindings/net/network-class.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/network-class.yaml b/Documentation/devicetree/bindings/net/network-class.yaml
index 06461fb92eb8..f7c8e24016f7 100644
--- a/Documentation/devicetree/bindings/net/network-class.yaml
+++ b/Documentation/devicetree/bindings/net/network-class.yaml
@@ -43,4 +43,7 @@ properties:
       maximum frame size (there\'s contradiction in the Devicetree
       Specification).
 
+allOf:
+  - $ref: /schemas/nvmem/nvmem-consumer.yaml#
+
 additionalProperties: true
-- 
2.55.0