Fix ESP8266 begin() call

Author: brentru

src/components/uart/hardware.cpp

@@ -154,8 +154,10 @@ bool UARTHardware::ConfigureSerial() {
 #if ARDUINO_ARCH_ESP32
     _hwSerial->begin((unsigned long)_config.baud_rate, (uint32_t)cfg, rx_pin,
                      tx_pin, false, (unsigned long)_config.timeout);
+#ifdef ARDUINO_ARCH_ESP8266
+     _hwSerial->begin((unsigned long)_config.baud_rate, (SerialConfig)cfg);
 #else
-    // ESP8266, SAMD, and other platforms
+    // SAMD, and other platforms
     // take the default Arduino/Wiring API arguments
     _hwSerial->begin((unsigned long)_config.baud_rate, (uint32_t)cfg);
 #endif