[coreboot] Patch merged into coreboot/master: 7ae18c2 Fix our CMOS checksum algorithm so it matches what /dev/nvram expects

the following patch was just integrated into master:
commit 7ae18c212c2ccca0c7f4691db0bfb5c89d8ce0ac
Author: Stefan Reinauer 
Date:   Fri Oct 14 15:24:03 2011 -0700

Fix our CMOS checksum algorithm so it matches what /dev/nvram expects

Our cmos checksum is inverted to what the Linux /dev/nvram device expects (and
    BIOSes use). This makes it impossible to use /dev/nvram with coreboot. Fix it!

Change-Id: I239f7e3aca05d3691aee16490dd801df2ccaefd1
    Signed-off-by: Vadim Bendebury 
    Signed-off-by: Stefan Reinauer

See http://review.coreboot.org/279 for details.

-gerrit