wifi: mac80211: move radar detect work to wiphy work

[ Upstream commit 228e4f93 ]

Move the radar detect work to wiphy work in order
to lock the wiphy for it without doing it manually.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Stable-dep-of: eadfb547 ("wifi: mac80211: move sched-scan stop work to wiphy work")
Signed-off-by: Sasha Levin <sashal@kernel.org>