mac80211: fixme for kernel-doc

Fix kernel-doc warnings in mac80211.h.
Fields need real explanations added to them.

Warning(lin2627-g3-kdocfixes//include/net/mac80211.h:659): No description found for parameter 'icv_len'
Warning(lin2627-g3-kdocfixes//include/net/mac80211.h:659): No description found for parameter 'iv_len'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

include/net/mac80211.h

@@ -645,7 +645,8 @@ enum ieee80211_key_flags {
  * 	- Temporal Encryption Key (128 bits)
  * 	- Temporal Authenticator Tx MIC Key (64 bits)
  * 	- Temporal Authenticator Rx MIC Key (64 bits)
- *
+ * @icv_len: FIXME
+ * @iv_len: FIXME
  */
 struct ieee80211_key_conf {
 	enum ieee80211_key_alg alg;