Update IDF to 9a26296

tools/sdk/include/esp32/esp_wifi_internal.h

@@ -40,6 +40,26 @@
 extern "C" {
 #endif
 
+/**
+ * @brief Initialize Wi-Fi Driver
+ *     Alloc resource for WiFi driver, such as WiFi control structure, RX/TX buffer,
+ *     WiFi NVS structure among others.
+ *
+ * For the most part, you need not call this function directly. It gets called
+ * from esp_wifi_init().
+ *
+ * This function may be called, if you only need to initialize the Wi-Fi driver
+ * without having to use the network stack on top.
+ *
+ * @param  config provide WiFi init configuration
+ *
+ * @return
+ *    - ESP_OK: succeed
+ *    - ESP_ERR_WIFI_NO_MEM: out of memory
+ *    - others: refer to error code esp_err.h
+ */
+esp_err_t esp_wifi_init_internal(wifi_init_config_t *config);
+
 /**
   * @brief  get whether the wifi driver is allowed to transmit data or not
   *