default or selected kernelversion does not have config value CONFIG_OMAP_THERMAL.
Result is shown for kernelversion 5.4.159

Texas Instruments OMAP4+ thermal framework support

configname: CONFIG_OMAP_THERMAL

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Texas Instruments OMAP4+ thermal framework support
In linux kernel since version 3.6 (release Date: 2012-09-30)  
If you say yes here you want to get support for generic thermal
framework for the Texas Instruments OMAP4460+ on die bandgap
temperature sensor.