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: NHaim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: NLuca Coelho <luciano.coelho@intel.com>
[fix kHz/MHz in commit message]
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>