Currently we get normal GEM handles from PrimeFDToHandle, yet we close
then with DUMB_CLOSE. Use GEM_CLOSE instead.
Fixes: da997ebec9 ("vulkan: Add KHR_display extension using DRM [v10]")
Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: Keith Packard <keithp@keithp.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>