[coreboot] Patch merged into coreboot/master: 74287ab Teach romcc about attribute((unused))

the following patch was just integrated into master:
commit 74287ab10266bef71fd21ced6e5857ef6ce16182
Author: Stefan Reinauer 
Date:   Thu Jun 21 17:21:08 2012 -0700

Teach romcc about attribute((unused))

This makes it easier to use the same code on romcc and gcc.
    Specifying attribute((unused)) on romcc does nothing.

Change-Id: If9a6900cad12900e499c4b8c91586511eb801987
    Signed-off-by: Stefan Reinauer

Build-Tested: build bot (Jenkins) at Fri Jun 22 02:44:27 2012, giving +1
Reviewed-By: Peter Stuge  at Fri Jun 22 03:29:21 2012, giving +2
See http://review.coreboot.org/1132 for details.

-gerrit