Staging: fwserial: Add blank line after declarations

Add blank line after the structure declaration,
struct fwtty_port *port = tty->driver_data;
Issue found using checkpatch.pl
Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fwserial/fwserial.c

@@ -1213,6 +1213,7 @@ static int get_serial_info(struct tty_struct *tty,
 			   struct serial_struct *ss)
 {
 	struct fwtty_port *port = tty->driver_data;
+
 	mutex_lock(&port->port.mutex);
 	ss->type =  PORT_UNKNOWN;
 	ss->line =  port->port.tty->index;