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/tools/admin/eksctl/default.nix

@@ -0,0 +1,44 @@
+{ lib, buildGoModule, fetchFromGitHub, installShellFiles }:
+
+buildGoModule rec {
+  pname = "eksctl";
+  version = "0.99.0";
+
+  src = fetchFromGitHub {
+    owner = "weaveworks";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-J2d3Uyc/gYciQaZJnOw0piO90ixtqgdnC0gprIoWmvs=";
+  };
+
+  vendorSha256 = "sha256-sRtFfJ7umVK8ruCpZ7TcTVcY9gr3Fldcf3KEdmbgkX4=";
+
+  doCheck = false;
+
+  subPackages = [ "cmd/eksctl" ];
+
+  tags = [ "netgo" "release" ];
+
+  ldflags = [
+    "-s"
+    "-w"
+    "-X github.com/weaveworks/eksctl/pkg/version.gitCommit=${src.rev}"
+    "-X github.com/weaveworks/eksctl/pkg/version.buildDate=19700101-00:00:00"
+  ];
+
+  nativeBuildInputs = [ installShellFiles ];
+
+  postInstall = ''
+    installShellCompletion --cmd eksctl \
+      --bash <($out/bin/eksctl completion bash) \
+      --fish <($out/bin/eksctl completion fish) \
+      --zsh  <($out/bin/eksctl completion zsh)
+  '';
+
+  meta = with lib; {
+    description = "A CLI for Amazon EKS";
+    homepage = "https://github.com/weaveworks/eksctl";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ xrelkd Chili-Man ];
+  };
+}