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/rdocker/default.nix

@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchFromGitHub, makeWrapper, openssh }:
+
+stdenv.mkDerivation {
+  pname = "rdocker";
+  version = "unstable-2018-07-17";
+
+  src = fetchFromGitHub {
+    owner = "dvddarias";
+    repo = "rdocker";
+    rev = "949377de0154ade2d28c6d4c4ec33b65ea813b5a";
+    sha256 = "1mwg9zh144q4fqk9016v2d347vzch8sxlixaxrz0ci9dxvs6ibd4";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  installPhase = ''
+    install -Dm755 rdocker.sh $out/bin/rdocker
+  '';
+
+  postInstall = ''
+    wrapProgram $out/bin/rdocker \
+      --prefix PATH : ${lib.makeBinPath [ openssh ]}
+  '';
+
+  meta = with lib; {
+    description = "Securely control a remote docker daemon CLI using ssh forwarding, no SSL setup needed";
+    homepage = "https://github.com/dvddarias/rdocker";
+    maintainers = [ lib.maintainers.pneumaticat ];
+    license = licenses.mit;
+    platforms = platforms.unix;
+  };
+}