reproduce:
        git remote add drm-misc git://anongit.freedesktop.org/drm/drm-misc
        git fetch drm-misc drm-misc-next
        git checkout drm-misc/drm-misc-next
        b4 shazam https://lore.kernel.org/r/20240214215756.6530-2-mario.limonciello@amd.com
        # 1. reproduce by kismet
           # install kmax per https://github.com/paulgazz/kmax/blob/master/README.md
           kismet --linux-ksrc=linux --selectees CONFIG_FB_BACKLIGHT --selectors CONFIG_FB_RADEON -a=alpha
        # 2. reproduce by make
           # save the config file to linux source tree
           cd linux
           make ARCH=alpha olddefconfig