[coreboot] Patch merged into coreboot/master: 4266b92 crossgcc: Fix buildgcc on Mac OS X

the following patch was just integrated into master:
commit 4266b92db06eae5c6aa3c8cc8eb2b873f40ecbba
Author: Stefan Reinauer 
Date:   Wed Dec 5 16:18:32 2012 -0800

crossgcc: Fix buildgcc on Mac OS X

Once again, the compiler we use on Mac OS X had trouble compiling GCC.
    Switch to llvm-gcc because that one works with Xcode 4.5.2 and gcc 4.7.2.
    Also drop the -W flags not known to Xcode from the iasl Makefile, and
    drop the --remove-destination option from the copy, because that does not
    exist on Darwin.

Change-Id: I9f978f65b5ae7edee2ecdcab337772e7a692bd9b
    Signed-off-by: Stefan Reinauer 
    Reviewed-on: http://review.coreboot.org/1967
    Tested-by: build bot (Jenkins)
    Reviewed-by: David Hendricks 
    Reviewed-by: Ronald G. Minnich

Build-Tested: build bot (Jenkins) at Thu Dec  6 01:30:16 2012, giving +1
Reviewed-By: David Hendricks  at Thu Dec  6 01:56:08 2012, giving +1
Reviewed-By: Ronald G. Minnich  at Thu Dec  6 02:01:41 2012, giving +2
See http://review.coreboot.org/1967 for details.

-gerrit