fix the bugs in ESP-NOW:

1. fix the bug when modifying the channel info of peer node
2. fix the crash when modifying peer node between unencrypted and encrypted
3. fix the bug for fetch peer
4. modify the esp_wifi_set_channel() function
5. fix the bug that the channel parameter doesn't work when adding peer node

Closes https://github.com/espressif/esp-idf/issues/2833
Closes https://github.com/espressif/esp-idf/issues/4311

components/esp_wifi/include/esp_wifi.h

@@ -548,8 +548,10 @@ esp_err_t esp_wifi_get_bandwidth(wifi_interface_t ifx, wifi_bandwidth_t *bw);
 /**
   * @brief     Set primary/secondary channel of ESP32
   *
-  * @attention 1. This is a special API for sniffer
-  * @attention 2. This API should be called after esp_wifi_start() and esp_wifi_set_promiscuous()
+  * @attention 1. This API should be called after esp_wifi_start()
+  * @attention 2. When ESP32 is in STA mode, this API should not be called when STA is scanning or connecting to an external AP
+  * @attention 3. When ESP32 is in softAP mode, this API should not be called when softAP has connected to external STAs
+  * @attention 4. When ESP32 is in STA+softAP mode, this API should not be called when in the scenarios described above  
   *
   * @param     primary  for HT20, primary is the channel number, for HT40, primary is the primary channel
   * @param     second   for HT20, second is ignored, for HT40, second is the second channel

components/esp_wifi/lib

@@ -1 +1 @@
-Subproject commit 6424396e3e0e56e5113e94994a398ec9f8baf765
+Subproject commit 53a0e9fc2617060d302438f41d5b42430e6364a3