[media] extract_xc3028.pl: move it to scripts/dir

This doesn't belong at documentation. Move it to scripts.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/Documentation/video4linux/extract_xc3028.pl b/scripts/extract_xc3028.pl
similarity index 100%
rename from Documentation/video4linux/extract_xc3028.pl
rename to scripts/extract_xc3028.pl