Unset CONFIG_P80211

[Karl Relton]

In the Jaunty kernel configs, CONFIG_P80211 can now be un-set.

This config enables the p80211 module in the Ubuntu sauce, which used to
be a prerequisite of the prism2_usb module in the Ubuntu sauce.

Both of these are now superseeded by the new prism2_usb module in
mainline (that has its own p80211 code compiled in). The Jaunty configs
unset the old prism2_usb, but have forgot to unset the old p80211, so it
gets compiled and installed unnecessarily.

Going forward (Jaunty+1), I guess the Ubuntu sauce for these can be
dispensed with altogether.

Regards
Karl