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/version-management/mr/default.nix

@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchgit, perl }:
+
+stdenv.mkDerivation {
+  pname = "mr";
+  version = "1.20180726";
+
+  src = fetchgit {
+    url = "git://myrepos.branchable.com/";
+    # the repository moved its tags at least once
+    # when updating please continue using the revision hash here
+    rev = "0ad7a17bb455de1fec3b2375c7aac72ab2a22ac4";
+    sha256 = "0jphw61plm8cgklja6hs639xhdvxgvjwbr6jpvjwpp7hc5gmhms5";
+  };
+
+  postPatch = ''
+    patchShebangs .
+  '';
+
+  buildInputs = [ perl ];
+
+  makeFlags = [ "PREFIX=$(out)" ];
+
+  meta = {
+    description = "Multiple Repository management tool";
+    longDescription = ''
+      mr is a tool to manage all your version control repos. It can
+      checkout, update, or perform other actions on a set of
+      repositories as if they were one combined repository. It
+      supports any combination of subversion, git, cvs, mercurial,
+      bzr, darcs, fossil and veracity repositories, and support for
+      other version control systems can easily be added.
+    '';
+    homepage = "http://myrepos.branchable.com/";
+    license = lib.licenses.gpl2Plus;
+    platforms = lib.platforms.unix;
+    maintainers = with lib.maintainers; [ antono henrytill ];
+  };
+}