default or selected kernelversion does not have config value CONFIG_IBMTR.
Result is shown for kernelversion 6.2.5

IBM Tropic chipset based adapter support

modulename: ibmtr.ko

configname: CONFIG_IBMTR

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Token Ring driver support
└─>IBM Tropic chipset based adapter support
In linux kernel since version 2.6.12  
This is support for all IBM Token Ring cards that don't use DMA. If
you have such a beast, say Y and read the Token-Ring mini-HOWTO,
available from <http://www.tldp.org/docs.html#howto>.

Warning: this driver will almost definitely fail if more than one
active Token Ring card is present.

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

source code: