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_gfx/default.nix

@@ -0,0 +1,46 @@
+{ lib, stdenv, darwin, fetchurl, pkg-config, SDL2 }:
+
+stdenv.mkDerivation rec {
+  pname = "SDL2_gfx";
+  version = "1.0.4";
+
+  src = fetchurl {
+    url = "http://www.ferzkopp.net/Software/${pname}/${pname}-${version}.tar.gz";
+    sha256 = "0qk2ax7f7grlxb13ba0ll3zlm8780s7j8fmrhlpxzjgdvldf1q33";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ SDL2 ]
+    ++ lib.optional stdenv.isDarwin darwin.libobjc;
+
+  configureFlags = [(if stdenv.hostPlatform.isx86 then "--enable-mmx" else "--disable-mmx")]
+     ++ lib.optional stdenv.isDarwin "--disable-sdltest";
+
+  meta = with lib; {
+    description = "SDL graphics drawing primitives and support functions";
+
+    longDescription = ''
+      The SDL_gfx library evolved out of the SDL_gfxPrimitives code
+      which provided basic drawing routines such as lines, circles or
+      polygons and SDL_rotozoom which implemented a interpolating
+      rotozoomer for SDL surfaces.
+
+      The current components of the SDL_gfx library are:
+
+          * Graphic Primitives (SDL_gfxPrimitves.h)
+          * Rotozoomer (SDL_rotozoom.h)
+          * Framerate control (SDL_framerate.h)
+          * MMX image filters (SDL_imageFilter.h)
+          * Custom Blit functions (SDL_gfxBlitFunc.h)
+
+      The library is backwards compatible to the above mentioned
+      code. Its is written in plain C and can be used in C++ code.
+    '';
+
+    homepage = "http://www.ferzkopp.net/wordpress/2016/01/02/sdl_gfx-sdl2_gfx/";
+    license = licenses.zlib;
+    maintainers = with maintainers; [ cpages ];
+    platforms = platforms.unix;
+  };
+}