default or selected kernelversion does not have config value CONFIG_DRM_XE_DEBUG_MEMIRQ.
Result is shown for kernelversion 6.6.75

Enable extra memirq debugging

configname: CONFIG_DRM_XE_DEBUG_MEMIRQ

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>drm/Xe Debugging
└─>Enable extra memirq debugging
In linux kernel since version 6.13 (release Date: 2025-01-19)  
Choose this option to enable additional debugging info for
memory based interrupts.

Recommended for driver developers only.

If in doubt, say "N".

depends
CONFIG_DRM
CONFIG_DRM_XE
CONFIG_EXPERT
CONFIG_HAS_IOMEM