Set up 3rdparty/libgfxinit

`libgfxinit` is a SPARK library for graphics modesetting. It supports
Intel integrated graphics only, strictly speaking, the Core i processor
line.

Change-Id: Idf4b0e5fbf37a5d974075b2e44d1fa16dc428da3
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/16949
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
3 files changed