Patch merged into coreboot/master: 6bde149 samsung/exynos5: add display port and framebuffer defines and initialization

the following patch was just integrated into master:
commit 6bde149d9c56a824eff5db7bb06d7c386fb2be30
Author: Ronald G. Minnich 
Date:   Fri Mar 1 10:18:14 2013 -0800

samsung/exynos5: add display port and framebuffer defines and initialization

These are essential functions for setting up the display port and
    framebuffer, and also enable such things as aux channel
    communications.  We do some very simple initialization in romstage,
    mainly set a GPIO so that the graphics is powering up, but the complex
    parts are done in the ramstage. This mirrors the way in which graphics
    is done in the x86 size.

I've added a first pass at a real device, and put it in the mainboard
    Kconfig, hoping for corrections. Because startup is so complex,
    depending on device type, I've created a 'displayport' device that
    removes some of the complexity and makes the flow *much* clearer.  You
    can actually follow the flow by looking at the code, which is not true
    on other implementations. Since display port is perhaps the main port
    used on these chips, that's a reasonable compromise. All parameters of
    importance are now in the device tree.

Change-Id: I56400ec9016ecb8716ec5a5dae41fdfbfff4817a
    Signed-off-by: Ronald G. Minnich 
    Reviewed-on: http://review.coreboot.org/2570
    Tested-by: build bot (Jenkins)

Build-Tested: build bot (Jenkins) at Wed Mar  6 23:33:36 2013, giving +1
Reviewed-By: Ronald G. Minnich  at Wed Mar  6 23:41:42 2013, giving +2
See http://review.coreboot.org/2570 for details.

-gerrit