[PATCH] ieee80211: fix recursive ipw2200 dependencies

This results in recursive dependencies:
- IPW2200 depends on NET_RADIO
- IPW2200 selects IEEE80211
- IEEE80211 selects NET_RADIO

This patch fixes the IPW2200 dependencies in a way that they are similar
to the IPW2100 dependencies.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Jiri Benc <jbenc@suse.cz>