default or selected kernelversion does not have config value CONFIG_RTC_DRV_MAX77802.
Result is shown for kernelversion 5.4.229

Maxim 77802 RTC

modulename: rtc-max77802.ko

configname: CONFIG_RTC_DRV_MAX77802

Linux Kernel Configuration
└─>Device Drivers
└─>Real Time Clock
└─>Maxim 77802 RTC
In linux kernel since version 3.18 (release Date: 2014-12-07)  
If you say yes here you will get support for the
RTC of Maxim MAX77802 PMIC.

This driver can also be built as a module. If so, the module
will be called rtc-max77802.

source code: