dt-bindings: net: wireless: brcm,bcm4329-fmac: add BCM4366 binding

It's an 802.11ac chipset that can be found hardwired in a lot of
Northstar based routers.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230602135925.14143-1-zajec5@gmail.comSigned-off-by: Florian Fainelli <florian.fainelli@broadcom.com>

Documentation/devicetree/bindings/net/wireless/brcm,bcm4329-fmac.yaml

@@ -38,6 +38,7 @@ properties:
               - brcm,bcm4354-fmac
               - brcm,bcm4356-fmac
               - brcm,bcm4359-fmac
+              - brcm,bcm4366-fmac
               - cypress,cyw4373-fmac
               - cypress,cyw43012-fmac
           - const: brcm,bcm4329-fmac