Patch merged into coreboot/master: 1d6bf8b x86, oprom: ensure DF is always cleared

the following patch was just integrated into master:
commit 1d6bf8be4ee126217544fabe1c39fe22317ddda0
Author: Mathias Krause 
Date:   Sun Apr 1 11:32:09 2012 +0200

x86, oprom: ensure DF is always cleared

The Option ROM might mess with the EFLAGS register and break assumptions
    the C part of coreboot implicitly has, e.g. the state of the direction
    flag.

Prevent Option ROMs from confusing coreboot by restoring the old EFLAGS
    value after the Option ROMs has finished and always clear the direction
    flag before calling the C part of the interrupt handler.

Change-Id: I84663be6681b17f95f48d93f0b730e443336b4a8
    Signed-off-by: Mathias Krause

Build-Tested: build bot (Jenkins) at Sun Apr  1 12:16:58 2012, giving +1
Reviewed-By: Stefan Reinauer  at Mon Apr  2 19:50:22 2012, giving +2
See http://review.coreboot.org/837 for details.

-gerrit