um: remove file pointer from ioctl

Commit 6caa76b ("tty: now phase out the ioctl file pointer for good")
removed the ioctl file pointer. User Mode Linux's line driver uses this
ioctl and needs a signature update too.

Signed-off-by: Richard Weinberger <[e-mail]>
Cc: Alan Cox <[e-mail]>
Cc: Greg KH <[e-mail]>
Cc: Jeff Dike <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/um/drivers/line.c

···
 	{ KDSIGACCEPT, KERN_INFO,  "KDSIGACCEPT" },
 };
 
-int line_ioctl(struct tty_struct *tty, struct file * file,
-	       unsigned int cmd, unsigned long arg)
+int line_ioctl(struct tty_struct *tty, unsigned int cmd,
+				unsigned long arg)
 {
 	int ret;
 	int i;

arch/um/include/shared/line.h

···
 extern void line_flush_buffer(struct tty_struct *tty);
 extern void line_flush_chars(struct tty_struct *tty);
 extern int line_write_room(struct tty_struct *tty);
-extern int line_ioctl(struct tty_struct *tty, struct file * file,
-		      unsigned int cmd, unsigned long arg);
+extern int line_ioctl(struct tty_struct *tty, unsigned int cmd,
+				unsigned long arg);
 extern void line_throttle(struct tty_struct *tty);
 extern void line_unthrottle(struct tty_struct *tty);