quoted

+     pcie@0,0 {
+             reg = <0x400000 0 0 0 0>;
+             #address-cells = <3>;
+             #size-cells = <2>;
+             ranges;
+             device_type = "pci";
+             bus-range = <0x40 0x4f>;
+
+             wifi: wifi@0,0 {

Where is the compatible (again!)? Test your code - you will see your
binding is a no-op.

I tried to build kernel with CHECK_DTBS=1. And didn't get any message
like 'compatible' is a required property in wifi node. But when I check
the bindings that do required the compatible... So I will add it next time.

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Best Regards
Jacobe