Patch merged into coreboot/master: cc84a00 build system: re-enable clang use

the following patch was just integrated into master:
commit cc84a001b8b71d457f30e5520c1583bbd297d691
Author: Patrick Georgi 
Date:   Wed May 14 21:05:35 2014 +0200

build system: re-enable clang use

Change-Id: I6e07fdec449d0b259d77986f65a60aa36d367cc8
    Signed-off-by: Patrick Georgi 
    Signed-off-by: Edward O'Callaghan 
    Reviewed-on: http://review.coreboot.org/5747
    Tested-by: build bot (Jenkins)

See http://review.coreboot.org/5747 for details.

-gerrit