default or selected kernelversion does not have config value CONFIG_VIDEO_TW686X_KH.
Result is shown for kernelversion 5.4.33

Intersil/Techwell TW686x Video For Linux

modulename: tw686x-kh.ko

configname: CONFIG_VIDEO_TW686X_KH

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Media staging drivers
└─>Intersil/Techwell TW686x Video For Linux
In linux kernel since version 4.7 (release Date: 2016-07-24)  
Support for Intersil/Techwell TW686x-based frame grabber cards.

Currently supported chips:
- TW6864 (4 video channels),
- TW6865 (4 video channels, not tested, second generation chip),
- TW6868 (8 video channels but only 4 first channels using
built-in video decoder are supported, not tested),
- TW6869 (8 video channels, second generation chip).

To compile this driver as a module, choose M here: the module
will be named tw686x-kh.

source code: