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/development/libraries/fplll/default.nix

@@ -0,0 +1,47 @@
+{ lib, stdenv
+, fetchFromGitHub
+, pkg-config
+, gettext
+, autoreconfHook
+, gmp
+, mpfr
+}:
+
+stdenv.mkDerivation rec {
+  pname = "fplll";
+  version = "5.4.2";
+
+  src = fetchFromGitHub {
+    owner = "fplll";
+    repo = "fplll";
+    rev = version;
+    sha256 = "sha256-6pzErZtT5xzCMcsNy2EwrZHiAICLrRl1dv59bp23hAA=";
+  };
+
+  nativeBuildInputs = [
+    pkg-config
+    gettext
+    autoreconfHook
+  ];
+
+  buildInputs = [
+    gmp
+    mpfr
+  ];
+
+  meta = with lib; {
+    description = "Lattice algorithms using floating-point arithmetic";
+    changelog = [
+      # Some release notes are added to the github tags, though they are not
+      # always complete.
+      "https://github.com/fplll/fplll/releases/tag/${version}"
+      # Releases are announced on this mailing list. Unfortunately it is not
+      # possible to generate a direct link to the most recent announcement, but
+      # this search should find it.
+      "https://groups.google.com/forum/#!searchin/fplll-devel/FPLLL$20${version}"
+    ];
+    license = licenses.lgpl21Plus;
+    maintainers = teams.sage.members;
+    platforms = platforms.unix;
+  };
+}