default or selected kernelversion does not have config value CONFIG_REGULATOR_MAX77843.
Result is shown for kernelversion 5.4.229

Maxim 77843 regulator

modulename: max77843.ko

configname: CONFIG_REGULATOR_MAX77843

Linux Kernel Configuration
└─>Device Drivers
└─>Voltage and Current Regulator Support
└─>Maxim 77843 regulator
In linux kernel since version 4 (release Date: 2015-04-12)  
This driver controls a Maxim 77843 regulator.
The regulator include two 'SAFEOUT' for USB(Universal Serial Bus)
This is suitable for Exynos5433 SoC chips.

source code: