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/ut2004/demo.nix

@@ -0,0 +1,40 @@
+{ lib, stdenv, fetchurl }:
+
+let
+  arch =
+    if stdenv.hostPlatform.system == "x86_64-linux" then "amd64"
+    else if stdenv.hostPlatform.system == "i686-linux" then "x86"
+    else throw "Unsupported architecture";
+
+in stdenv.mkDerivation rec {
+  pname = "ut2004-demo";
+  version = "3334";
+
+  src = fetchurl {
+    url = "http://ftp.snt.utwente.nl/pub/games/UT2004/demo/UT2004-LNX-Demo${version}.run.gz";
+    sha256 = "0d5f84qz8l1rg16yzx2k4ikr46n9iwj68na1bqi87wrww7ck6jh7";
+  };
+
+  buildCommand = ''
+    cat $src | gunzip > setup.run
+    chmod +x setup.run
+    ./setup.run --noexec --target .
+    mkdir $out
+    tar -xaf ut2004demo.tar.bz2 -C $out
+    tar -xaf linux-${arch}.tar.bz2 -C $out
+
+    rm $out/System/libSDL-1.2.so.0
+    rm $out/System/openal.so
+  '';
+
+  dontStrip = true;
+  dontPatchELF = true;
+
+  meta = with lib; {
+    description = "A first-person shooter video game developed by Epic Games and Digital Extreme -- demo version";
+    homepage = "http://www.unrealtournament2004.com";
+    license = licenses.unfree;
+    maintainers = with maintainers; [ abbradar ];
+    platforms = [ "x86_64-linux" "i686-linux" ];
+  };
+}