default or selected kernelversion does not have config value CONFIG_AD4030.
Result is shown for kernelversion 6.6.86

Analog Devices AD4030 ADC Driver

modulename: ad4030.ko

configname: CONFIG_AD4030

Linux Kernel Configuration
└─>Device Drivers
└─>Industrial I/O support
└─>Analog to digital converters
└─>SPI support
└─>GPIO Support
└─>Analog Devices AD4030 ADC Driver
In linux kernel since version 6.6.86 (release Date: 2025-04-07)  
Say yes here to build support for Analog Devices AD4030 and AD4630 high speed
SPI analog to digital converters (ADC).

To compile this driver as a module, choose M here: the module will be
called ad4030.

source code: