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/SDL_gfx/default.nix

@@ -0,0 +1,44 @@
+{ lib, stdenv, fetchurl, SDL }:
+
+stdenv.mkDerivation rec {
+  pname = "SDL_gfx";
+  version = "2.0.26";
+
+  src = fetchurl {
+    url = "https://www.ferzkopp.net/Software/SDL_gfx-2.0/${pname}-${version}.tar.gz";
+    sha256 = "0ijljhs0v99dj6y27hc10z6qchyp8gdp4199y6jzngy6dzxlzsvw";
+  };
+
+  buildInputs = [ SDL ] ;
+
+  configureFlags = [ "--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 = "https://sourceforge.net/projects/sdlgfx/";
+    license = licenses.zlib;
+
+    maintainers = with maintainers; [ bjg ];
+    platforms = platforms.unix;
+  };
+}