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/jo/default.nix

@@ -0,0 +1,25 @@
+{lib, stdenv, fetchFromGitHub, autoreconfHook, pandoc, pkg-config}:
+
+stdenv.mkDerivation rec {
+  pname = "jo";
+  version = "1.6";
+
+  src = fetchFromGitHub {
+    owner  = "jpmens";
+    repo = "jo";
+    rev = version;
+    sha256 ="sha256-aATCeJV0x+XHOQbwulutxivPzGVQ0mJj90vA+6IM124=";
+  };
+
+  enableParallelBuilding = true;
+
+  nativeBuildInputs = [ autoreconfHook pandoc pkg-config ];
+
+  meta = with lib; {
+    description = "A small utility to create JSON objects";
+    homepage = "https://github.com/jpmens/jo";
+    license = licenses.gpl2Plus;
+    maintainers = [maintainers.markus1189];
+    platforms = platforms.all;
+  };
+}