wifi: iwlwifi: mvm: check AP supports EMLSR

Before using EMLSR check the AP actually advertises
support for it, otherwise reject the link activation.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240131091413.edaac352488d.Ic3533afc6848591e8977391ae39c144d5e794d26@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

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

@@ -1280,6 +1280,9 @@ static bool iwl_mvm_can_enter_esr(struct iwl_mvm *mvm,
 	if (primary_link < 0)
 		return false;
 
+	if (!(vif->cfg.eml_cap & IEEE80211_EML_CAP_EMLSR_SUPP))
+		return false;
+
 	for_each_set_bit(link_id, &desired_links, IEEE80211_MLD_MAX_NUM_LINKS) {
 		struct ieee80211_bss_conf *link_conf =
 			link_conf_dereference_protected(vif, link_id);