default or selected kernelversion does not have config value CONFIG_DRM_I915_DEBUG_WAKEREF.
Result is shown for kernelversion 6.8-rc6

Enable extra tracking for wakerefs


Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>drm/i915 Debugging
└─>Enable extra tracking for wakerefs
Choose this option to turn on extra state checking and usage
tracking for the wakerefPM functionality. This may introduce
overhead during driver runtime.

If in doubt, say "N"