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/security/munge/default.nix

@@ -0,0 +1,34 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, libgcrypt, zlib, bzip2 }:
+
+stdenv.mkDerivation rec {
+  pname = "munge";
+  version = "0.5.14";
+
+  src = fetchFromGitHub {
+    owner = "dun";
+    repo = "munge";
+    rev = "${pname}-${version}";
+    sha256 = "15h805rwcb9f89dyrkxfclzs41n3ff8x7cc1dbvs8mb0ds682c4j";
+  };
+
+  nativeBuildInputs = [ autoreconfHook ];
+  buildInputs = [ libgcrypt zlib bzip2 ];
+
+  preAutoreconf = ''
+    # Remove the install-data stuff, since it tries to write to /var
+    substituteInPlace src/Makefile.am --replace "etc \\" "\\"
+  '';
+
+  configureFlags = [
+    "--localstatedir=/var"
+  ];
+
+  meta = with lib; {
+    description = ''
+      An authentication service for creating and validating credentials
+    '';
+    license = licenses.lgpl3;
+    platforms = platforms.unix;
+    maintainers = [ maintainers.rickynils ];
+  };
+}