drm/amdgpu: fix MQD debugfs undefined symbol when DEBUG_FS=n

Fix undefined reference to amdgpu_mqd_info_fops during
debugfs_create_file if DEBUG_FS=n

Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Link: https://lore.kernel.org/r/20250708101551.68033-1-sunil.khatri@amd.com
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>

Author: amd-sukhatri

drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c

@@ -319,8 +319,9 @@ amdgpu_userq_destroy(struct drm_file *filp, int queue_id)
 	}
 	amdgpu_bo_unref(&queue->db_obj.obj);
 
+#if defined(CONFIG_DEBUG_FS)
 	debugfs_remove_recursive(queue->debugfs_queue);
-
+#endif
 	r = amdgpu_userq_unmap_helper(uq_mgr, queue);
 	amdgpu_userq_cleanup(uq_mgr, queue, queue_id);
 	mutex_unlock(&uq_mgr->userq_mutex);
@@ -523,9 +524,11 @@ amdgpu_userq_create(struct drm_file *filp, union drm_amdgpu_userq *args)
 	if (!queue_name)
 		return -ENOMEM;
 
+#if defined(CONFIG_DEBUG_FS)
 	/* Queue dentry per client to hold MQD information   */
 	queue->debugfs_queue = debugfs_create_dir(queue_name, filp->debugfs_client);
 	debugfs_create_file("mqd_info", 0444, queue->debugfs_queue, queue, &amdgpu_mqd_info_fops);
+#endif
 	kfree(queue_name);
 
 	args->out.queue_id = qid;