uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/applications/networking/cluster/kfctl/default.nix

@@ -0,0 +1,32 @@
+{ lib, buildGoModule, fetchFromGitHub, installShellFiles }:
+
+buildGoModule rec {
+  pname = "kfctl";
+  version = "1.2.0";
+
+  src = fetchFromGitHub {
+    owner = "kubeflow";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-FY7o4QULobLY1djfcc2l6awE/v2stN7cc2lffMkjoPc=";
+  };
+
+  vendorSha256 = "sha256-+6sxXp0LKegZjEFv1CIQ6xYh+hXLn+o9LggRYamCzpI=";
+
+  subPackages = [ "cmd/kfctl" ];
+
+  nativeBuildInputs = [ installShellFiles ];
+
+  postInstall = ''
+  installShellCompletion --cmd eksctl \
+    --bash <($out/bin/kfctl completion bash) \
+    --zsh <($out/bin/kfctl completion zsh)
+  '';
+
+  meta = with lib; {
+    description = "A CLI for deploying and managing Kubeflow";
+    homepage = "https://github.com/kubeflow/kfctl";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ mvnetbiz ];
+  };
+}