Patch merged into coreboot/master: 882fdcf armv7/exynos5250: fix usage of _stack and _estack

the following patch was just integrated into master:
commit 882fdcf2271d385f1110c0f3737ceeb5e30d2861
Author: David Hendricks 
Date:   Thu Feb 14 16:41:54 2013 -0800

armv7/exynos5250: fix usage of _stack and _estack

This patch fixes up the usage of stack pointer and regions.
    The current approach only works by coincidence, so this fixes a few
    things at once to get it into a working state and allow us to use
    checkstack() again:

- Add a STACK_SIZE Kconfig variable. Earlier on it was evaluated to 0.

- Assign _stack and _estack using CPU-specific Kconfig variables since
      it may reside elsewhere in memory (not necessarily DRAM).

- Make the existing IRAM stack variables more useful in this context.

Change-Id: I4ca5b5680c9ea7e26b1b2b6b3890e028188b51c2
    Signed-off-by: David Hendricks 
    Reviewed-on: http://review.coreboot.org/2416
    Reviewed-by: Ronald G. Minnich 
    Tested-by: build bot (Jenkins)

Build-Tested: build bot (Jenkins) at Sat Feb 16 00:33:24 2013, giving +1
See http://review.coreboot.org/2416 for details.

-gerrit