Patch merged into coreboot/master: 4e158bc armv7: work around hang in bootblock startup code

the following patch was just integrated into master:
commit 4e158bcbac427b58f09fa94e22014592cf606adb
Author: Daisuke Nojiri 
Date:   Fri Feb 6 19:13:34 2015 -0800

armv7: work around hang in bootblock startup code

broadcom cygnus hangs if we clean caches by dcache_clean_invalidate_all
    at bootblock entry point. this change makes startup code call
    dcache_invalidate_all instead.

other boards theoretically should not be affected as long as maskrom
    does not hand off execution to bootblock with dirty cache.

BUG=chrome-os-partner:36648,chrome-os-partner:36691
    BRANCH=broadcom-firmware
    TEST=boot cygnus b0 board, messages were printed on console:

coreboot-688aae9-dirty bootblock Mon Feb  9 13:21:02 PST 2015
    starting...
    Exception handlers installed.

Change-Id: I05777ca525c97bb3d7cbb5ea7e872a602dcd5a19
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 59de5328df9d0502a3b3f7c624d3e86e038de50e
    Original-Signed-off-by: Daisuke Nojiri 
    Original-Change-Id: I9b8850846b941e7e62712e90cc28ad14a68da393
    Original-Reviewed-on: https://chromium-review.googlesource.com/251304
    Original-Reviewed-by: Julius Werner 
    Reviewed-on: http://review.coreboot.org/9762
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/9762 for details.

-gerrit