
My vc4 simulator has been implemented so far by having an entrypoint claiming to be i965, which was a bit gross. The simulator would be a lot less special if we entered through the vc4 entrypoint like normal, so add a loader environment variable to allow the i965 fd to probe as vc4. Reviewed-by: Emil Velikov <emil.velikov@collabora.com> Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>