mlo rx nss value 0 of wifi

[Wen Gong]

Hi Johannes,

Currently for MLO test, the others links's rx_nss of struct
ieee80211_link_sta is still value 0 in ieee80211_set_associated(),
becaue they are not pass into ieee80211_sta_set_rx_nss() in
mac80211 except the deflink which means the primary link in
rate_control_rate_init(). This lead driver get nss = 0 for
other links. Will you fix it or is it design by default?

Only primary link has valid rx_nss value which is not 0 by below call stack.
ieee80211_assoc_success()
     ->rate_control_rate_init(sta);
         ->ieee80211_sta_set_rx_nss(&sta->deflink);