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/SDL2_ttf/default.nix

@@ -0,0 +1,25 @@
+{ lib, stdenv, pkg-config, darwin, fetchurl, SDL2, freetype, libGL }:
+
+stdenv.mkDerivation rec {
+  pname = "SDL2_ttf";
+  version = "2.0.18";
+
+  src = fetchurl {
+    url = "https://www.libsdl.org/projects/SDL_ttf/release/${pname}-${version}.tar.gz";
+    sha256 = "sha256-cjTriINRTgGed0fHA+SndFdbGNQ1wipKKdBoy3aKIlE=";
+  };
+
+  configureFlags = lib.optional stdenv.isDarwin "--disable-sdltest";
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ SDL2 freetype libGL ]
+    ++ lib.optional stdenv.isDarwin darwin.libobjc;
+
+  meta = with lib; {
+    description = "Support for TrueType (.ttf) font files with Simple Directmedia Layer";
+    platforms = platforms.unix;
+    license = licenses.zlib;
+    homepage = "https://github.com/libsdl-org/SDL_ttf";
+  };
+}