nl80211: Pass center frequency in kHz instead of MHz

freq_reg_info expects to get the frequency in kHz. Instead we
accidently pass it in MHz.  Thus, currently the function always
return ERR rule. Fix that.

Fixes: 50f32718 ("nl80211: Add wmm rule attribute to NL80211_CMD_GET_WIPHY dump command")
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
[fix kHz/MHz in commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/wireless/nl80211.c

@@ -764,7 +764,7 @@ static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 
 	if (large) {
 		const struct ieee80211_reg_rule *rule =
-			freq_reg_info(wiphy, chan->center_freq);
+			freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
 
 		if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
 			if (nl80211_msg_put_wmm_rules(msg, rule))