Adds inclusion of UARTSerial header

Veijo Pesonen · Veijo Pesonen · commit 7b978e9a67f6 · 2018-10-19T16:31:49.000+03:00
diff --git a/ESP8266/ESP8266.h b/ESP8266/ESP8266.h
@@ -21,6 +21,7 @@
 #include "Mutex.h"
 #include "nsapi_types.h"
 #include "rtos.h"
+#include "drivers/UARTSerial.h"
 
 // Various timeouts for different ESP8266 operations
 #ifndef ESP8266_CONNECT_TIMEOUT
