[PATCH] wifi: mt76: mt7603: initialize global station WCID

[Cristian Papa]

Hi,

Gentle ping on this one: the oops is still there in mt76.git at
be5ce79105 and in wireless-next at 10cfa109c880.

Another Archer XR500v owner (NetviperZ) hit the same oops with
aireplay-ng -9 on the 2.4 GHz radio and confirmed that this patch fixes
it, and I have repeated the injection test on top of be5ce79105: the
frames go out and complete, with no oops.

Thanks,
Cristian