Patch merged into coreboot/master: Set up 3rdparty/libgfxinit

the following patch was just integrated into master:
commit ef405a2c04d2eac47bc6e28de8a4040ed9e0c611
Author: Nico Huber 
Date:   Sun Oct 9 12:12:52 2016 +0200

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 
    Reviewed-on: https://review.coreboot.org/16949
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See https://review.coreboot.org/16949 for details.

-gerrit