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/data/misc/polytopes_db/default.nix

@@ -0,0 +1,25 @@
+{ lib, stdenv
+, fetchurl
+}:
+
+stdenv.mkDerivation rec {
+  pname = "polytopes_db";
+  version = "20170220";
+
+  src = fetchurl {
+    url = "mirror://sageupstream/${pname}/${pname}-${version}.tar.bz2";
+    sha256 = "1q0cd811ilhax4dsj9y5p7z8prlalqr7k9mzq178c03frbgqny6b";
+  };
+
+  installPhase = ''
+    mkdir -p "$out/share/reflexive_polytopes"
+    cp -R * "$out/share/reflexive_polytopes/"
+  '';
+
+  meta = with lib; {
+    description = "Reflexive polytopes database";
+    license = licenses.gpl2;
+    platforms = platforms.all;
+    maintainers = teams.sage.members;
+  };
+}