default or selected kernelversion does not have config value CONFIG_AXP20X_ADC.
Result is shown for kernelversion 6.0-rc7

X-Powers AXP20X and AXP22X ADC driver

modulename: axp20x_adc.ko
configname: CONFIG_AXP20X_ADC

Linux Kernel Configuration
└─> Device Drivers
└─> Industrial I/O support
└─> Analog to digital converters
└─> X-Powers AXP20X and AXP22X ADC driver

Say yes here to have support for X-Powers power management IC (PMIC)
AXP20X and AXP22X ADC devices.

To compile this driver as a module, choose M here: the module will be
called axp20x_adc.

source code: