default or selected kernelversion does not have config value CONFIG_TN3270_TTY.
Result is shown for kernelversion 6.9.9
Support for tty input/output on 3270 terminals
modulename: tty3270.ko
configname: CONFIG_TN3270_TTY
Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Support for tty input/output on 3270 terminals
In linux kernel since version 2.6.24 (release Date: 2008-01-24)
Include support for using an IBM 3270 terminal as a Linux tty.