default or selected kernelversion does not have config value CONFIG_MEDIA_CEC.
Result is shown for kernelversion 6.4.14
CEC API (EXPERIMENTAL)
configname: CONFIG_MEDIA_CEC
Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Media staging drivers
└─>Multimedia support
└─>CEC API (EXPERIMENTAL)
In linux kernel since version 4.8 (release Date: 2016-10-02)
Enable the CEC API.