V4L/DVB (6216): V4L: Int if: add vidioc_int_g_ifparm, other updates

vidioc_int_g_ifparm can be used to obtain hardware-specific information
about the interface used by the slave.

Rearrange v4l2-int-device.h as well.

Also remove useless & characters.

Signed-off-by: Sakari Ailus <sakari.ailus@nokia.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/v4l2-int-device.c b/drivers/media/video/v4l2-int-device.c
index a643730..7ad8700 100644
--- a/drivers/media/video/v4l2-int-device.c
+++ b/drivers/media/video/v4l2-int-device.c
@@ -150,7 +150,7 @@
 {
 	return ((v4l2_int_ioctl_func_0 *)
 		find_ioctl(d->u.slave, cmd,
-			   (v4l2_int_ioctl_func *)&no_such_ioctl_0))(d);
+			   (v4l2_int_ioctl_func *)no_such_ioctl_0))(d);
 }
 
 static int no_such_ioctl_1(struct v4l2_int_device *d, void *arg)
@@ -162,5 +162,5 @@
 {
 	return ((v4l2_int_ioctl_func_1 *)
 		find_ioctl(d->u.slave, cmd,
-			   (v4l2_int_ioctl_func *)&no_such_ioctl_1))(d, arg);
+			   (v4l2_int_ioctl_func *)no_such_ioctl_1))(d, arg);
 }