Rename serial2 to aux_serial

radio/src/targets/taranis/telemetry_driver.cpp

@@ -186,8 +186,8 @@ uint8_t telemetryGetByte(uint8_t * byte)
 {
 #if defined(AUX_SERIAL)
   if (telemetryProtocol == PROTOCOL_TELEMETRY_FRSKY_D_SECONDARY) {
-    if (serial2Mode == UART_MODE_TELEMETRY)
-      return serial2RxFifo.pop(*byte);
+    if (auxSerialMode == UART_MODE_TELEMETRY)
+      return auxSerialRxFifo.pop(*byte);
     else
       return false;
   }