Patch merged into coreboot/master: memlayout: Add symbols for stage bounds

the following patch was just integrated into master:
commit 862c385f9a6a5b92fa6b694136854d84b471ed8e
Author: Julius Werner 
Date:   Thu Feb 18 15:46:15 2016 -0800

memlayout: Add symbols for stage bounds

Stages are inconsistent with other memlayout regions in that they don't
    have _<name> and _e<name> symbols defined. We have _program and
    _eprogram, but that always only refers to the current stage and
    _eprogram marks the actual end of the executable's memory footprint, not
    the end of the area allocated in memlayout. Both of these are sometimes
    useful to know, so let's add another set of symbols that allow the stage
    areas to be treated more similarly to other regions.

Change-Id: I9e8cff46bb15b51c71a87bd11affb37610aa7df9
    Signed-off-by: Julius Werner 
    Reviewed-on: https://review.coreboot.org/13737
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin

See https://review.coreboot.org/13737 for details.

-gerrit