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/games/openttd/grfcodec.nix

@@ -0,0 +1,28 @@
+{ stdenv, lib, fetchFromGitHub, boost, cmake, git }:
+
+stdenv.mkDerivation rec {
+  pname = "openttd-grfcodec";
+  version = "unstable-2021-03-10";
+
+  src = fetchFromGitHub {
+    owner = "OpenTTD";
+    repo = "grfcodec";
+    rev = "045774dee7cab1a618a3e0d9b39bff78a12b6efa";
+    sha256 = "0b4xnnkqc01d3r834lhkq744ymar6c8iyxk51wc4c7hvz0vp9vmy";
+  };
+
+  buildInputs = [boost];
+  nativeBuildInputs = [cmake git];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp -a grfcodec grfid grfstrip nforenum $out/bin/
+  '';
+
+  meta = with lib; {
+    description = "Low-level (dis)assembler and linter for OpenTTD GRF files";
+    homepage    = "http://openttd.org/";
+    license     = licenses.gpl2;
+    maintainers = with maintainers; [ ToxicFrog ];
+  };
+}