message: core: actually set the baudrate on Linux
  This fixes a bug introduced in
  By adding macOS support for serial, I had accidentally removed setting
  the baudrate for Linux.
diff: @@ -150,6 +150,9 @@ ConnectionResult SerialConnection::setup_port()
  tc.c_cflag &= ~(CBAUD);
  tc.c_cflag |= BOTHER;
  + tc.c_ispeed = _baudrate;
  + tc.c_ospeed = _baudrate;
  +
  if (ioctl(_fd, TCSETS2, &tc) == -1) {
  LogErr() << "Could not set terminal attributes " << GET_ERROR();
  close(_fd);
  