convert more media images to SVG

Using vectorial graphics provide a better visual. As those images
are originally using a vectorial graphics input at the pdf files,
use them, from an old media tree repository, converting them to SVG.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>