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/iortcw/default.nix

@@ -0,0 +1,27 @@
+{ buildEnv, callPackage, makeWrapper }:
+
+let
+  sp = callPackage ./sp.nix {};
+  mp = sp.overrideAttrs (oldAttrs: rec {
+    sourceRoot = "source/MP";
+  });
+in buildEnv {
+  name = "iortcw";
+
+  paths = [ sp mp ];
+
+  pathsToLink = [ "/opt" ];
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  # so we can launch sp from mp game and vice versa
+  postBuild = ''
+    for i in `find -L $out/opt/iortcw -maxdepth 1 -type f -executable`; do
+      makeWrapper $i $out/bin/`basename $i` --chdir "$out/opt/iortcw"
+    done
+  '';
+
+  meta = sp.meta // {
+    description = "Game engine for Return to Castle Wolfenstein";
+  };
+}