lwip/freertos/esp32: add throughput optimization related code

1. Update wifi lib which contains ampdu and other optimizations
2. Add throughput code debug code
3. Other misc modification about throughput optimization

components/esp32/include/esp_wifi_types.h

@@ -121,7 +121,7 @@ typedef enum {
 #define WIFI_PROTOCOL_11N         4
 
 typedef enum {
-    WIFI_BW_HT20 = 0, /* Bandwidth is HT20 */
+    WIFI_BW_HT20 = 1, /* Bandwidth is HT20 */
     WIFI_BW_HT40,     /* Bandwidth is HT40 */
 } wifi_bandwidth_t;