wifi: mac80211: support NAN stations

wifi: mac80211: support NAN stations

Add support for both NMI and NDI stations.

The NDI station will be linked to the NMI station of the NAN peer for
which the NDI station is added.

A peer can choose to reuse its NMI address as the NDI address.
Since different keys might be in use for NAN management and for data
frames, we will have 2 different stations, even if they'll have the same
address.

Even though there are no links in NAN, sta->deflink will still be used
to store the one set of capabilities and SMPS mode.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260326121156.9fdd37b8e755.I7a7bd6e8e751cab49c329419485839afd209cfc6@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>