mac80211: improve AP disconnect message

If the AP changes capability/bandwidth in some fashion, the
message might be somewhat misleading and we don't know what
really changed. Modify the message to speak about "caps/bw"
instead of just "bandwidth", and print out the flags.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210618133832.dc22c48985fa.I4bf5fbc17ec783c21d4b50c8c35b1de390896ccd@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/mlme.c

@@ -444,8 +444,8 @@ static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
 				      IEEE80211_STA_DISABLE_160MHZ)) ||
 	    !cfg80211_chandef_valid(&chandef)) {
 		sdata_info(sdata,
-			   "AP %pM changed bandwidth in a way we can't support - disconnect\n",
-			   ifmgd->bssid);
+			   "AP %pM changed caps/bw in a way we can't support (0x%x/0x%x) - disconnect\n",
+			   ifmgd->bssid, flags, ifmgd->flags);
 		return -EINVAL;
 	}