[media] v4l2-ioctl: drop spurious newline in string

The message logged by v4l_print_cropcap should be a single line withouti
linebreaks, just like all the other v4l_print_<ioctl> functions.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>