virgl: add exported dmabuf to BO hash table

Exported dmabufs can get imported by the same process, but the handle was
not getting added to the hash table on export. Add the handle to the hash
table on export.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

src/gallium/winsys/virgl/drm/virgl_drm_winsys.c

@@ -489,6 +489,9 @@ static boolean virgl_drm_winsys_resource_get_handle(struct virgl_winsys *qws,
    } else if (whandle->type == DRM_API_HANDLE_TYPE_FD) {
       if (drmPrimeHandleToFD(qdws->fd, res->bo_handle, DRM_CLOEXEC, (int*)&whandle->handle))
             return FALSE;
+      pipe_mutex_lock(qdws->bo_handles_mutex);
+      util_hash_table_set(qdws->bo_handles, (void *)(uintptr_t)res->bo_handle, res);
+      pipe_mutex_unlock(qdws->bo_handles_mutex);
    }
    whandle->stride = stride;
    return TRUE;