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/xskat/default.nix

@@ -0,0 +1,30 @@
+{lib, stdenv, fetchurl, libX11, imake, gccmakedep}:
+
+stdenv.mkDerivation rec {
+  pname = "xskat";
+  version = "4.0";
+
+  nativeBuildInputs = [ gccmakedep ];
+  buildInputs = [ libX11 imake ];
+
+  src = fetchurl {
+    url = "http://www.xskat.de/xskat-${version }.tar.gz";
+    sha256 = "8ba52797ccbd131dce69b96288f525b0d55dee5de4008733f7a5a51deb831c10";
+  };
+
+  preInstall = ''
+    sed -i Makefile \
+      -e "s|.* BINDIR .*|   BINDIR = $out/bin|" \
+      -e "s|.* MANPATH .*|  MANPATH = $out/man|"
+  '';
+
+  installTargets = [ "install" "install.man" ];
+
+  meta = with lib; {
+    description = "Famous german card game";
+    platforms = platforms.unix;
+    license = licenses.free;
+    longDescription = "Play the german card game Skat against the AI or over IRC.";
+    homepage = "http://www.xskat.de/";
+  };
+}