Incidentally, there is some discussion about EAP-AKA on freeradius-devel at the moment: http://lists.freeradius.org/pipermail/freeradius-devel/2013-April/008016.html
If that user gets it working, they may be able to help you. - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html