According to https://gcc.gnu.org/gcc-4.6/changes.html it's only in gcc 4.6,
not 4.5, which I mistakenly believed.
Change-Id: I8212e7921bd9d1436a0ba491cbe6c4d473228956
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: http://review.coreboot.org/11476
Reviewed-by: Jonathan A. Kollasch <jakllsch@kollasch.net>
Tested-by: build bot (Jenkins)