drm/xe: Print proper revid value for unknown media revision

If the GMD_ID register reports a higher media revision ID than we're
expecting, print the media revid, not the graphics revid, in the
debug message.

Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://lore.kernel.org/r/20230614205202.3376752-4-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/xe_step.c

@@ -235,7 +235,7 @@ struct xe_step_info xe_step_gmdid_get(struct xe_device *xe,
 	if (step.media >= STEP_FUTURE) {
 		step.media = STEP_FUTURE;
 		drm_dbg(&xe->drm, "Media GMD_ID revid value %d treated as future stepping\n",
-			graphics_gmdid_revid);
+			media_gmdid_revid);
 	}
 
 	return step;