reproduce (this is a W=1 build):
        # https://github.com/Freescale/linux-fslc/commit/a32bd4692437b1a2fc977fc8b1302e6107b2f0d6
        git remote add freescale-fslc https://github.com/Freescale/linux-fslc
        git fetch --no-tags freescale-fslc pr/317
        git checkout a32bd4692437b1a2fc977fc8b1302e6107b2f0d6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash