docker-machine-hyperkit: disable on aarch64-darwin

It's not supported in upstream, see
https://github.com/kubernetes/minikube/blob/master/pkg/minikube/driver/driver_darwin.go#L27-L35

+1 -1
+1 -1
pkgs/applications/networking/cluster/docker-machine/hyperkit.nix
··· 18 18 description = "HyperKit driver for docker-machine"; 19 19 license = licenses.asl20; 20 20 maintainers = with maintainers; [ atkinschang ]; 21 - platforms = platforms.darwin; 21 + platforms = [ "x86_64-darwin" ]; 22 22 }; 23 23 }