reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git/commit/?id=4095cf872084ecfdfdb0e681f3e9ff9745acfa75
        git remote add broonie-sound https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
        git fetch --no-tags broonie-sound for-next
        git checkout 4095cf872084ecfdfdb0e681f3e9ff9745acfa75
        # 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 sound/soc/amd/yc/