default or selected kernelversion does not have config value CONFIG_AUXDISPLAY.
Result is shown for kernelversion 6.0-rc7

Auxiliary Display support


Linux Kernel Configuration
└─> Device Drivers
└─> Auxiliary Display support

Say Y here to get to see options for auxiliary display drivers.
This option alone does not add any kernel code.

If you say N, all options in this submenu will be skipped and disabled.