cris: Remove obsolete ASYNC_SPLIT_TERMIOS behavior

ASYNC_SPLIT_TERMIOS behavior is a remnant of the long-dead /dev/cuaXX
callout device. Split termios handling was removed tree-wide in v2.5.71 by:

commit 99a21edebbfd8c29e39ee7fcc8a1ffa423657290
Author: Alexander Viro <viro@www.linux.org.uk>
Date:   Wed Jun 11 07:41:28 2003 -0700

    [PATCH] tty_driver refcounting

    killed the last remnants of callout stuff - we don't need to mess with
    storing termios privately anymore.

which pre-dated the re-introduction into the cris serial driver
in v2.6.7 by:

commit 311a5ffeda8ccb3f1f3840069f37234e043092d4
Author: Andrew Morton <akpm@osdl.org>
Date:   Mon May 31 18:52:29 2004 -0700

    [PATCH] CRIS architecture update

    From: "Mikael Starvik" <mikael.starvik@axis.com>

    - Lots of fixes from 2.4.

    - Updated for 2.6.6.

    - Added IDE driver

Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/crisv10.c

@@ -3675,12 +3675,6 @@ rs_close(struct tty_struct *tty, struct file * filp)
 		return;
 	}
 	info->port.flags |= ASYNC_CLOSING;
-	/*
-	 * Save the termios structure, since this port may have
-	 * separate termios for callout and dialin.
-	 */
-	if (info->port.flags & ASYNC_NORMAL_ACTIVE)
-		info->normal_termios = tty->termios;
 	/*
 	 * Now we wait for the transmit buffer to clear; and we notify
 	 * the line discipline to only process XON/XOFF characters.
@@ -4076,11 +4070,6 @@ rs_open(struct tty_struct *tty, struct file * filp)
 		return retval;
 	}
 
-	if ((info->port.count == 1) && (info->port.flags & ASYNC_SPLIT_TERMIOS)) {
-		tty->termios = info->normal_termios;
-		change_speed(info);
-	}
-
 #ifdef SERIAL_DEBUG_OPEN
 	printk("rs_open ttyS%d successful...\n", info->line);
 #endif
@@ -4327,7 +4316,6 @@ static int __init rs_init(void)
 		info->custom_divisor = 0;
 		info->x_char = 0;
 		info->event = 0;
-		info->normal_termios = driver->init_termios;
 		info->xmit.buf = NULL;
 		info->xmit.tail = info->xmit.head = 0;
 		info->first_recv_buffer = info->last_recv_buffer = NULL;

drivers/tty/serial/crisv10.h

@@ -98,7 +98,6 @@ struct e100_serial {
 
 	struct work_struct	work;
 	struct async_icount	icount;   /* error-statistics etc.*/
-	struct ktermios		normal_termios;
 
 	unsigned long char_time_usec;       /* The time for 1 char, in usecs */
 	unsigned long flush_time_usec;      /* How often we should flush */