Trying to use __sync_fetch_and_add ends with a gcc ICE.
This fixes following autobuild failure, by actually disabling
the package for coldfire:
http://autobuild.buildroot.net/results/d719db11210d42501332586b4485ab0cc1e125dd/



Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>