[media] v4l2-ioctl: fix stupid mistake in cropcap condition

Fix duplicate tests in condition. The second test for vidioc_cropcap
should have tested for vidioc_g_selection instead.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: David Binderman <linuxdev.baldrick@gmail.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>