Patch merged into coreboot/master: caea002 Re-run the git-describe if it fails at first try.

the following patch was just integrated into master:
commit caea00287693097c2b3724485892526357e64d13
Author: zbao 
Date:   Mon Jul 23 12:11:59 2012 +0800

Re-run the git-describe if it fails at first try.

Old rev (1.6.6, in my case) git-describe doesn't take the --dirty and says error.
    Remove the --dirty at second try.

Change-Id: Id6c6f9889ab20fb7c2b238f8c0bbe20134757369
    Signed-off-by: Zheng Bao 
    Signed-off-by: zbao

Reviewed-By: Patrick Georgi  at Fri Jul 27 07:58:37 2012, giving +2
See http://review.coreboot.org/1261 for details.

-gerrit