usteer: add BSSID to node struct

Add the node BSSID to the usteer_node struct. This will be helpful in
the future when evaluating beacon reports from STAs.

Signed-off-by: David Bauer <mail@david-bauer.net>

usteer.h

@@ -67,6 +67,7 @@ struct usteer_node {
 	struct blob_attr *rrm_nr;
 	struct blob_attr *node_info;
 	char ssid[33];
+	uint8_t bssid[6];
 
 	bool disabled;
 	int freq;