cyclades: use tty_port

struct cyclades_port {

	int                     magic;

	struct tty_port		port;

	struct cyclades_card	*card;

	int			line;

	int			flags; 		/* defined in tty.h */

	int                     type;		/* UART type */

	struct tty_struct 	*tty;

	int			read_status_mask;

	int			ignore_status_mask;

	int			timeout;

	u8			x_char; /* to be pushed out ASAP */

	int			close_delay;

	unsigned short		closing_wait;

	int			count;	/* # of fd on device */

	int                     breakon;

	int                     breakoff;

	int			blocked_open; /* # of blocked opens */

	unsigned char 		*xmit_buf;

	int			xmit_head;

	int			xmit_tail;

	int			xmit_cnt;

	struct cyclades_monitor	mon;

	struct cyclades_idle_stats	idle_stats;

	struct cyclades_icount	icount;

	wait_queue_head_t       open_wait;

	wait_queue_head_t       close_wait;

	struct completion       shutdown_wait;

	wait_queue_head_t       delta_msr_wait;

	int throttle;