Patch merged into coreboot/master: mb/google/slippy: Hook up libgfxinit

the following patch was just integrated into master:
commit 1b3a6e4b1489af477cfff1b1df4a37ccdb75f20d
Author: Arthur Heymans 
Date:   Sun Dec 18 16:05:15 2016 +0100

mb/google/slippy: Hook up libgfxinit

Both HDMI and eDP work (simultaneously).

TESTED on Acer C720 (peppy).

Change-Id: Ifc4e3c187bcabd8965d9586237a52b440bfa7f20
    Signed-off-by: Arthur Heymans 
    Reviewed-on: https://review.coreboot.org/17916
    Reviewed-by: Nico Huber 
    Tested-by: build bot (Jenkins)

See https://review.coreboot.org/17916 for details.

-gerrit