northbridge/intel/nehalem: Fix native VGA init

Building an image for the Lenovo X201 with native graphics
initialization selected fails due to the changes introduced by commit
a3b898aa (edid: Clean-up the edid struct).
Same as in 11738 / 11585 / 11491

Change-Id: I4233a4ce2f5423c7ebdad68e8059cd34ac61cfaa
Signed-off-by: Nicolas Reinecke <nr@das-labor.org>
Reviewed-on: http://review.coreboot.org/11787
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
1 file changed