default or selected kernelversion does not have config value CONFIG_DVB_TUNER_MT2131.
Result is shown for kernelversion 5.19-rc1

Microtune MT2131 silicon tuner

modulename: mt2131.ko

configname: CONFIG_DVB_TUNER_MT2131

Linux Kernel Configuration
└─>Device Drivers
└─>Multimedia devices
└─>DVB/ATSC adapters
└─>Customise DVB Frontends
└─>I2C support
└─>Microtune MT2131 silicon tuner
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
A driver for the silicon baseband tuner MT2131 from Microtune.

source code: