Fix compile errors in SGI console drivers (linux-next tree)

The below is the patch to replace blindly all possible places,
including Jack's fixes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
(Reviewed and checked rather than blindly added)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/serial/ip22zilog.c

@@ -257,8 +257,8 @@ static struct tty_struct *ip22zilog_receive_chars(struct uart_ip22zilog_port *up
 
 	tty = NULL;
 	if (up->port.info != NULL &&
-	    up->port.info->tty != NULL)
-		tty = up->port.info->tty;
+	    up->port.info->port.tty != NULL)
+		tty = up->port.info->port.tty;
 
 	for (;;) {
 		ch = readb(&channel->control);