tty: add more tty_port fields

Move more bits into the tty_port structure

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/tty.h

@@ -188,6 +188,8 @@ struct tty_port {
 	unsigned long		flags;		/* TTY flags ASY_*/
 	struct mutex		mutex;		/* Locking */
 	unsigned char		*xmit_buf;	/* Optional buffer */
+	int			close_delay;	/* Close port delay */
+	int			closing_wait;	/* Delay for output */
 };
 
 /*