Fixes this compile issue:
  drivers/serial/bfin_5xx.c: In function bfin_serial_rx_chars:
  drivers/serial/bfin_5xx.c:178: error: struct uart_info has no member named tty
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
                        return;
                }
 
-       if (!uart->port.info || !uart->port.info->tty)
+       if (!uart->port.info || !uart->port.info->port.tty)
                return;
 #endif
-       tty = uart->port.info->tty;
+       tty = uart->port.info->port.tty;
 
        if (ANOMALY_05000363) {
                /* The BF533 (and BF561) family of processors have a nice anomaly