[coreboot] Patch merged into coreboot/master: 2892023 AGESA F15tn: Move callouts into northbridge wrapper

the following patch was just integrated into master:
commit 2892023fd422794bb82658dde3e8d489af2bdd55
Author: Martin Roth 
Date:   Thu Jan 17 12:04:08 2013 -0700

AGESA F15tn: Move callouts into northbridge wrapper

There are currently too many things in the mainboard directories that
    are really more suited to being in the northbridge / southbridge
    wrappers.  This is a start at moving some of those functions down
    into the wrappers.

Move the bios callback functions into the northbridge/amd/agesa/family15tn
    directory from the mainboard directories.  These can still be overridden
    by any mainboard just by updating the pointer in the callback table to
    point to a customized version of the function.

Change-Id: Icefaa014f4a4abbe51870aee7aa2fa1164e324c1
    Signed-off-by: Martin Roth 
    Reviewed-on: http://review.coreboot.org/2169
    Tested-by: build bot (Jenkins)
    Reviewed-by: Marc Jones

Build-Tested: build bot (Jenkins) at Fri Jan 18 22:46:44 2013, giving +1
Reviewed-By: Marc Jones  at Fri Jan 18 22:57:38 2013, giving +2
See http://review.coreboot.org/2169 for details.

-gerrit