default or selected kernelversion does not have config value CONFIG_FB_CMDLINE.
Result is shown for kernelversion 6.9.9
CONFIG_FB_CMDLINE (not configurable)
modulename: fb_cmdline.ko
configname: CONFIG_FB_CMDLINE
Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Frame buffer Devices
└─>FB_CMDLINE