zink: be a little selective about BAR fallback memory type

some resources MUST be host-visible, so use the appropriate heap for them

cc: mesa-stable

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17093>

src/gallium/drivers/zink/zink_resource.c

@@ -961,7 +961,10 @@ retry:
    obj->bo = zink_bo(zink_bo_create(screen, reqs.size, alignment, heap, mai.pNext ? ZINK_ALLOC_NO_SUBALLOC : 0, mai.pNext));
    if (!obj->bo) {
       if (heap == ZINK_HEAP_DEVICE_LOCAL_VISIBLE) {
-         heap = ZINK_HEAP_DEVICE_LOCAL;
+         if (templ->flags & PIPE_RESOURCE_FLAG_MAP_COHERENT || templ->usage == PIPE_USAGE_DYNAMIC)
+            heap = ZINK_HEAP_HOST_VISIBLE_COHERENT;
+         else
+            heap = ZINK_HEAP_DEVICE_LOCAL;
          goto retry;
       }
       goto fail2;