Bug#808784: Refresh the xserver-xorg-video-openchrome package

[Dylan <bob.dybian@gmail.com>]

Hi the Debian X Strike Force team,
The package of xserver-xorg-video-openchrome is quite outdated, with
the reborn of openchrome project and the approaching of the Debian
Freeze, it could be great to refresh the package.

Since the package is RFA, I propose myself to update this package,
maybe not to adopt in a first time. Let's see how I deal with it.
Moreover, I don't have access to a supported hardware so a
(co-?)maintainer with the hardware should be better.

I am only DM, so I will need sponsor for this package. I have already
started to update the package [1].

Best regards,
Dylan

[1] https://bitbucket.org/Dybian/openchrome/