default or selected kernelversion does not have config value CONFIG_USB_GTCO.
Result is shown for kernelversion 5.10.188

GTCO CalComp/InterWrite USB Support

modulename: gtco.ko

configname: CONFIG_USB_GTCO

Linux Kernel Configuration
└─>Device Drivers
└─>USB support
└─>GTCO CalComp/InterWrite USB Support
In linux kernel since version 2.6.21.1 (release Date: 2007-04-27)  
Say Y here if you want to use the USB version of the GTCO
CalComp/InterWrite Tablet. Make sure to say Y to "Mouse support"
(CONFIG_INPUT_MOUSEDEV) and/or "Event interface support"
(CONFIG_INPUT_EVDEV) as well.

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

source code: