default or selected kernelversion does not have config value CONFIG_COMEDI_SKEL.
Result is shown for kernelversion 6.5.1

Comedi skeleton driver

modulename: skel.ko


Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Comedi misc drivers
└─>Comedi skeleton driver
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
Build the Skeleton driver, an example for driver writers

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

source code: