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

Texas Instruments OMAP4+ temperature sensor driver

modulename: omap-thermal.ko


Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Generic Thermal sysfs driver
└─>Texas Instruments OMAP4+ temperature sensor driver
In linux kernel since version 3.6 (release Date: 2012-09-30)  
If you say yes here you get support for the Texas Instruments
OMAP4460+ on die bandgap temperature sensor support. The register
set is part of system control module.

This includes alert interrupts generation and also the TSHUT

source code: