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/development/tools/butane/default.nix

@@ -0,0 +1,37 @@
+{ lib, fetchFromGitHub, buildGoModule }:
+
+with lib;
+
+buildGoModule rec {
+  pname = "butane";
+  version = "0.14.0";
+
+  src = fetchFromGitHub {
+    owner = "coreos";
+    repo = "butane";
+    rev = "v${version}";
+    sha256 = "sha256-rS1/LQ5R3WY9ot1pgtN+6t/ZChr9SxPzrsNio7WWNqQ=";
+  };
+
+  vendorSha256 = null;
+
+  doCheck = false;
+
+  subPackages = [ "internal" ];
+
+  ldflags = [
+    "-X github.com/coreos/butane/internal/version.Raw=v${version}"
+  ];
+
+  postInstall = ''
+    mv $out/bin/{internal,butane}
+  '';
+
+  meta = {
+    description = "Translates human-readable Butane configs into machine-readable Ignition configs";
+    license = licenses.asl20;
+    homepage = "https://github.com/coreos/butane";
+    maintainers = with maintainers; [ elijahcaine ruuda ];
+    platforms = platforms.unix;
+  };
+}