wifi: mt76: Backport prospective patch (Closes: #1029116).
It fixes a kernel panic when unloading the module.
This happens within the installer after firmware files have been deployed, at least with mt7921e.
This might find its way to 6.1.y, but seeing how bad it is when that happens, and seeing that there are several bug reports about it already, it makes sense to fix this in bookworm ASAP.