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/mednaffe/default.nix

@@ -0,0 +1,41 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, autoreconfHook
+, pkg-config
+, mednafen
+, gtk3
+, wrapGAppsHook
+}:
+
+stdenv.mkDerivation rec {
+  pname = "mednaffe";
+  version = "0.9.2";
+
+  src = fetchFromGitHub {
+    owner = "AmatCoder";
+    repo = "mednaffe";
+    rev = version;
+    sha256 = "sha256-zvSAt6CMcgdoPpTTA5sPlQaWUw9LUMsR2Xg9jM2UaWY=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook pkg-config wrapGAppsHook ];
+
+  buildInputs = [ gtk3 mednafen ];
+
+  enableParallelBuilding = true;
+
+  preFixup = ''
+    gappsWrapperArgs+=(
+      --prefix PATH ':' "${mednafen}/bin"
+    )
+   '';
+
+  meta = with lib; {
+    description = "GTK-based frontend for mednafen emulator";
+    homepage = "https://github.com/AmatCoder/mednaffe";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ sheenobu yana AndersonTorres ];
+    platforms = platforms.unix;
+  };
+}