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.com


Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>