Tools:drm/framebuffer: Add drm-framebuffer to access the drm device from cmdline

The framebuffer could be accessed by a simple write the the /dev/fb0.
This tool allows similar access by piping the data into it and
specifying the connector as parameter.
It also allows to query few things from the drm.

The recipe has a GPLv3 licenses and needs therefore to be moved to the
GPLv3 subgroup.