Don't build for i686
    
    There is a segfault on i686
    
    + ./process_configs.sh -n -c kernel 4.18.0
    ~/build/BUILD/kernel-4.17.fc29/linux-4.18.0-0.rc0.git9.1.fc29.i686 ~/build/BUILD/kernel-4.17.fc29/linux-4.18.0-0.rc0.git9.1.fc29.i686/configs
    Processing /builddir/build/BUILD/kernel-4.17.fc29/linux-4.18.0-0.rc0.git9.1.fc29.i686/configs/kernel-4.18.0-aarch64.config ... /builddir/build/BUILD/kernel-4.17.fc29/linux-4.18.0-0.rc0.git9.1.fc29.i686/configs/kernel-4.18.0-aarch64.config:5814:warning: override: SPARSEMEM_MANUAL changes choice state
    /builddir/build/BUILD/kernel-4.17.fc29/linux-4.18.0-0.rc0.git9.1.fc29.i686/configs/kernel-4.18.0-aarch64.config:6846:warning: override: VIRT_CPU_ACCOUNTING_NATIVE changes choice state
    make[1]: *** [scripts/kconfig/Makefile:64: olddefconfig] Segmentation fault (core dumped)
    
    No idea why but we don't want to stop other arches. Disable it
    for now.