panvk/jm: assert that the submit mode is not threaded

If the submit mode was VK_QUEUE_SUBMIT_MODE_THREADED, we would need to
call vk_common_QueueWaitIdle.

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31720>

src/panfrost/vulkan/jm/panvk_vX_queue.c

@@ -331,6 +331,9 @@ panvk_per_arch(QueueWaitIdle)(VkQueue _queue)
    VK_FROM_HANDLE(panvk_queue, queue, _queue);
    struct panvk_device *dev = to_panvk_device(queue->vk.base.device);
 
+   /* we need to use vk_common_QueueWaitIdle if we ever go threaded */
+   assert(queue->vk.submit.mode != VK_QUEUE_SUBMIT_MODE_THREADED);
+
    if (vk_device_is_lost(&dev->vk))
       return VK_ERROR_DEVICE_LOST;