Patch merged into coreboot/master: 21d0fc0 Add a clean target to the run firmware (runfw) Makefile

the following patch was just integrated into master:
commit 21d0fc0d3701d1c359fb4d4267383aeaa5886a7e
Author: Ronald G. Minnich 
Date:   Wed Jan 30 13:41:03 2013 -0600

Add a clean target to the run firmware (runfw) Makefile

It's just good hygiene.

Change-Id: Ie7d4557c1d0dcf7fc015852c4c9b2eae29c4acfc
    Signed-off-by: Ronald G. Minnich 
    Reviewed-on: http://review.coreboot.org/2232
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer 
    Reviewed-by: David Hendricks

Build-Tested: build bot (Jenkins) at Wed Jan 30 20:49:20 2013, giving +1
Reviewed-By: Stefan Reinauer  at Wed Jan 30 21:20:19 2013, giving +2
Reviewed-By: David Hendricks  at Wed Jan 30 21:22:04 2013, giving +2
See http://review.coreboot.org/2232 for details.

-gerrit