esp32c3: Apply one-liner/small changes for ESP32-C3

* Original commit: espressif/esp-idf@5228d9f9ce

components/mdns/private_include/mdns_networking.h

@@ -19,7 +19,6 @@
 #include "lwip/priv/tcpip_priv.h"
 #include "esp_wifi.h"
 #include "esp_system.h"
-#include "esp_timer.h"
 #include "esp_event.h"
 #if CONFIG_ETH_ENABLED
 #include "esp_eth.h"

components/mdns/private_include/mdns_private.h

@@ -16,6 +16,7 @@
 
 #include "esp_event_base.h"
 #include "esp_task.h"
+#include "esp_timer.h"
 
 //#define MDNS_ENABLE_DEBUG