Fix wrong IEEE 802.11 ioctl's:

Fix wrong IEEE 802.11 ioctl's:

  * SIOCG80211ALLNODES operates on struct ieee80211_nodereq_all, not
    struct ieee80211_nodereq.

  * Six SIOC* from wi(4) were using same codes with generic parts of
    IEEE 802.11 framework. Things worked due to the fact that size
    of data struct being passed is encoded in actual SIOC*, too.

This commit means that ifconfig and some ports will need to be rebuilt,
if any of affected SIOC* codes is used. Port bumps to follow.

First part okay reyk@, whole diff okay mpi@
Heavy prodding to commit now from deraadt@