default or selected kernelversion does not have config value CONFIG_AD5766.
Result is shown for kernelversion 5.4.107

Analog Devices AD5766/AD5767 DAC driver

modulename: ad5766.ko
configname: CONFIG_AD5766

Linux Kernel Configuration
└─> Device Drivers
└─> Industrial I/O support
└─> Digital to analog converters
└─> Analog Devices AD5766/AD5767 DAC driver

Say yes here to build support for Analog Devices AD5766, AD5767
Digital to Analog Converter.

To compile this driver as a module, choose M here: the
module will be called ad5766.

source code: