[media] -EINVAL -> -ENOTTY

I found one more place where -EINVAL is used instead of -ENOTTY:

Note that drivers/media/dvb/dvb-core/dvbdev.c has the same code, but as far as
I can tell DVB is still using -EINVAL for unknown ioctls so I didn't change
that.

Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/video/v4l2-ioctl.c

···
 	/* Handles IOCTL */
 	err = func(file, cmd, parg);
 	if (err == -ENOIOCTLCMD)
-		err = -EINVAL;
+		err = -ENOTTY;
 
 	if (has_array_args) {
 		*kernel_ptr = user_ptr;