default or selected kernelversion does not have config value CONFIG_DVB_CINERGYT2_TUNING.
Result is shown for kernelversion 5.3.7

sophisticated fine-tuning for CinergyT2 cards

configname: CONFIG_DVB_CINERGYT2_TUNING

Linux Kernel Configuration
└─>Device Drivers
└─>Multimedia devices
└─>DVB/ATSC adapters
└─>sophisticated fine-tuning for CinergyT2 cards
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Here you can fine-tune some parameters of the CinergyT2 driver.

Normally you don't need to touch this, but in exotic setups you
may fine-tune your setup and adjust e.g. DMA buffer sizes for
a particular application.