/* Add the specified station to the station table.
* Allocates a new ieee80211_node* that has a reference count of one
* If tmp is 0, it is added to the node table and the reference is used.
/* Add the specified station to the station table.
* Allocates a new ieee80211_node* that has a reference count of one
* If tmp is 0, it is added to the node table and the reference is used.