[PATCH] Dynamic airo.c patch for 2.6.10

Here is a patch for the 2.6.10 aironet driver that
will enable dynamic wep keying without resetting the
MAC. It allows us to use xsupplicant with the driver.

There are two lines of ugliness (the ones with the 0
&&) where I ignore the flag that says wether we are
setting a permanent or a temporary key since
xsupplicant doesn't use the IW_ENCODE_TEMP flag.