tty: now phase out the ioctl file pointer for good

Only oddities here are a couple of drivers that bogusly called the ldisc
helpers instead of returning -ENOIOCTLCMD. Fix the bug and the rest goes
away.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 150a862..d188f37 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -1655,7 +1655,7 @@
 	return ret;
 }
 
-static int mxser_ioctl(struct tty_struct *tty, struct file *file,
+static int mxser_ioctl(struct tty_struct *tty,
 		unsigned int cmd, unsigned long arg)
 {
 	struct mxser_port *info = tty->driver_data;