Add debug print for no-enabled-networks case

If there are any disabled networks, show a debug print with the count
of those networks when no enabled networks are found. This can be
helpful in trying to figure out why scans are being skipped.

Signed-hostap: Jouni Malinen <j@w1.fi>

wpa_supplicant/scan.c

@@ -83,15 +83,21 @@ static int wpas_wps_in_use(struct wpa_supplicant *wpa_s,
 int wpa_supplicant_enabled_networks(struct wpa_supplicant *wpa_s)
 {
 	struct wpa_ssid *ssid = wpa_s->conf->ssid;
-	int count = 0;
+	int count = 0, disabled = 0;
 	while (ssid) {
 		if (!wpas_network_disabled(wpa_s, ssid))
 			count++;
+		else
+			disabled++;
 		ssid = ssid->next;
 	}
 	if (wpa_s->conf->cred && wpa_s->conf->interworking &&
 	    wpa_s->conf->auto_interworking)
 		count++;
+	if (count == 0 && disabled > 0) {
+		wpa_dbg(wpa_s, MSG_DEBUG, "No enabled networks (%d disabled "
+			"networks)", disabled);
+	}
 	return count;
 }