[coreboot-gerrit] Patch merged into coreboot/master: 586460b cbfs: Check return value of map() for error

the following patch was just integrated into master:
commit 586460b24276d944deed1d3c599bcae96457a1db
Author: Julius Werner 
Date:   Mon Oct 28 20:00:50 2013 -0700

cbfs: Check return value of map() for error

The CBFS core checks the result of a media->map() operation in multiple
    places for CBFS_MEDIA_INVALID_MAP_ADDRESS, suggesting that this is a
    valid response. However, it ironically fails to do so when actually
    mapping the CBFS file itself, which can fail on buffer-constrained
    systems since the size is much larger than when mapping metadata. This
    patch adds a check with an error message and a NULL pointer return for
    that case to make it easier to understand this condition.

Change-Id: Icae3dd20d3d111cdfc4f2dc6397b52174349b140
    Signed-off-by: Julius Werner 
    Reviewed-on: https://chromium-review.googlesource.com/174951
    Reviewed-by: Gabe Black 
    Reviewed-by: Hung-Te Lin 
    (cherry picked from commit 63f2c4465f9633a637186e69bc3862d5413106ac)
    Signed-off-by: Isaac Christensen 
    Reviewed-on: http://review.coreboot.org/6537
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich

See http://review.coreboot.org/6537 for details.

-gerrit