wifi: iwlwifi: mvm: disconnect long CSA only w/o alternative

If there's an alternative link to use while the CSA is in
progress, there's no need to disconnect since another link
is still usable during the switching time. Change the code
here to handle that accordingly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230830112059.dd1b96a37e51.Idafdcbfcb36ca4c486f4221aef77643869331514@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c

@@ -5459,7 +5459,8 @@ int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
 			goto out_unlock;
 		}
 
-		if (chsw->delay > IWL_MAX_CSA_BLOCK_TX)
+		if (chsw->delay > IWL_MAX_CSA_BLOCK_TX &&
+		    hweight16(vif->valid_links) <= 1)
 			schedule_delayed_work(&mvmvif->csa_work, 0);
 
 		if (chsw->block_tx) {