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

Discretix SEP driver

modulename: sep_driver.ko

configname: CONFIG_DX_SEP

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Discretix SEP driver
In linux kernel since version 2.6.32 (release Date: 2009-12-02)  
Discretix SEP driver; used for the security processor subsystem
on board the Intel Mobile Internet Device and adds SEP availability
to the kernel crypto infrastructure

The driver's name is sep_driver.

If unsure, select N.

source code: