modules: hostap: Supports link mode of legacy STA.

Link mode shows unknown when legacy (A or bg only) device connects to
APUT. Set the link mode to WIFI_2 when the host freq over 4000 and set
link mode to WIFI_3 when the host freq over 2000.

Signed-off-by: Hui Bai <[email protected]>

Author: nxf58150

modules/hostap/src/supp_events.c

@@ -271,6 +271,11 @@ static enum wifi_link_mode get_sta_link_mode(struct wpa_supplicant *wpa_s, struc
 		return WIFI_2;
 	} else if (wpa_s->assoc_freq > 2000) {
 		return WIFI_3;
+#else
+	} else if (iface->freq > 4000) {
+		return WIFI_2;
+	} else if (iface->freq > 2000) {
+		return WIFI_3;
 #endif
 	} else {
 		return WIFI_LINK_MODE_UNKNOWN;