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/pari-seadata-small/default.nix

@@ -0,0 +1,26 @@
+{ lib, stdenv
+, fetchurl
+}:
+
+stdenv.mkDerivation {
+  version = "20090618";
+  pname = "pari-seadata-small";
+
+  src = fetchurl {
+    url = "http://pari.math.u-bordeaux.fr/pub/pari/packages/seadata-small.tgz";
+    sha256 = "13qafribxwkz8h3haa0cng7arz0kh7398br4y7vqs9ib8w9yjnxz";
+  };
+
+  installPhase = ''
+    mkdir -p "$out/share/pari"
+    cp -R * "$out/share/pari/"
+  '';
+
+  meta = with lib; {
+    description = "PARI database needed by ellap for large primes";
+    homepage = "http://pari.math.u-bordeaux.fr/";
+    license = licenses.gpl2Plus;
+    platforms = platforms.all;
+    maintainers = teams.sage.members;
+  };
+}