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/applications/emulators/dgen-sdl/default.nix

@@ -0,0 +1,71 @@
+{ lib
+, stdenv
+, fetchurl
+, libarchive
+, SDL
+}:
+
+stdenv.mkDerivation rec {
+  pname = "dgen-sdl";
+  version = "1.33";
+
+  src = fetchurl {
+    url = "https://sourceforge.net/projects/dgen/files/dgen/${version}/${pname}-${version}.tar.gz";
+    hash = "sha256-meLAYBfCKHPHf4gYbrzAmGckTrbgQsdjuwlLArje9h4=";
+  };
+
+  buildInputs = [
+    SDL
+    libarchive
+  ];
+
+  configureFlags = [
+    "--enable-debug-vdp"
+    "--enable-debugger"
+    "--enable-joystick"
+    "--enable-pico" # experimental
+    "--enable-vgmdump"
+    "--with-cyclone=no" # Needs ASM support
+    "--with-cz80"
+    "--with-drz80=no" # Needs ASM support
+    "--with-dz80"
+    "--with-musa"
+    "--with-mz80"
+    "--with-star=no" # Needs ASM support
+  ];
+
+  meta = with lib; {
+    homepage = "http://dgen.sourceforge.net/";
+    description = "Sega Genesis/Mega Drive emulator";
+    longDescription = ''
+      DGen/SDL is a free, open source emulator for Sega Genesis/Mega Drive
+      systems. DGen was originally written by Dave, then ported to SDL by Joe
+      Groff and Phil K. Hornung in 1998.
+
+      It features:
+
+      - Game Genie/Hex codes support
+      - PAL/NTSC, fullscreen modes
+      - Joypad/joystick support
+      - Mouse support
+      - Highly configurable controls
+      - OpenGL textured video output
+      - Portable (64‐bit, endian safe), runs in Windows using MinGW
+      - Screenshots, demos recording and playback
+      - Musashi (generic) and StarScream (x86‐only) CPU cores
+      - Cyclone 68000 and DrZ80 (both ARM‐only) CPU cores
+      - CZ80 (generic) and MZ80 (generic and x86‐only versions)
+      - 16‐bit, 8000 to 48000Hz sound output
+      - Support for 8, 15, 16, 24 and 32 bpp modes
+      - Archived/compressed ROMs support
+      - M68K debugger (contributed by Edd Barrett)
+      - Z80 debugger
+      - hqx and scale2x upscaling filters
+      - VGM dumping
+    '';
+    license = licenses.mit;
+    maintainers = with maintainers; [ AndersonTorres ];
+    platforms = with platforms; unix;
+  };
+}
+# TODO: implement configure options