kernel: wi0: timeout in wi_seek

[Gregory Bond]

> You are probably using WEP, and this causes lockups in the wi driver.

Well, I've been using WEP on a prism2.5 card (dlink 520) under -STABLE in
hostap mode for ages with no lockups at all.  

wi0: <Intersil Prism2.5> mem 0xfbfe0000-0xfbfe0fff irq 11 at device 12.0 on pci0
wi0: 802.11 address: 00:05:5d:5b:c4:c8
wi0: using RF:PRISM2.5 MAC:ISL3874A(Mini-PCI)
wi0: Intersil Firmware: Primary 1.00.05, Station 1.03.04