This fixes this build failure (and many others):
http://autobuild.buildroot.org/results/d56/d56bfc69ef0a478219c959d50fb96d526fc2155e/
The build failure is caused by the build system using -Werror; this is
already patched upstream, so this commit just imports the upstream
patch.
Signed-off-by: Noé Rubinstein <noe.rubinstein@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
