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/minizinc/default.nix

@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchFromGitHub, cmake, flex, bison }:
+stdenv.mkDerivation rec {
+  pname = "minizinc";
+  version = "2.6.2";
+
+  nativeBuildInputs = [ cmake flex bison ];
+
+  src = fetchFromGitHub {
+    owner = "MiniZinc";
+    repo = "libminizinc";
+    rev = version;
+    sha256 = "sha256-0yOZZJMDMmIBCJ2ZU3AfGvFSANqHNFN+UHYMI0nogOQ=";
+  };
+
+  meta = with lib; {
+    homepage = "https://www.minizinc.org/";
+    description = "A medium-level constraint modelling language";
+
+    longDescription = ''
+      MiniZinc is a medium-level constraint modelling
+      language. It is high-level enough to express most
+      constraint problems easily, but low-level enough
+      that it can be mapped onto existing solvers easily and consistently.
+      It is a subset of the higher-level language Zinc.
+    '';
+
+    license = licenses.mpl20;
+    platforms = platforms.unix;
+    maintainers = [ maintainers.sheenobu ];
+  };
+}