reproduce (this is a W=1 build):
        # https://github.com/Freescale/linux-fslc/commit/4566b0c3ecd0e12fba132e31b76adca9fe8e875d
        git remote add freescale-fslc https://github.com/Freescale/linux-fslc
        git fetch --no-tags freescale-fslc 6.6-2.0.x-imx
        git checkout 4566b0c3ecd0e12fba132e31b76adca9fe8e875d
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/ata/ drivers/gpu/ drivers/mfd/ drivers/net/ethernet/freescale/dpaa2/ drivers/phy/ drivers/pmdomain/imx/ drivers/soc/fsl/dpio/ drivers/staging/ drivers/vfio/fsl-mc/