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/commanderx16/emulator.nix

@@ -0,0 +1,45 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, SDL2
+}:
+
+stdenv.mkDerivation rec {
+  pname = "x16-emulator";
+  version = "40";
+
+  src = fetchFromGitHub {
+    owner = "commanderx16";
+    repo = pname;
+    rev = "r${version}";
+    hash = "sha256-7ZzVd2NJCFNAFrS2cj6bxcq/AzO5VakoFX9o1Ac9egg=";
+  };
+
+  dontConfigure = true;
+
+  buildInputs = [ SDL2 ];
+
+  installPhase = ''
+    runHook preInstall
+
+    install -Dm 755 -t $out/bin/ x16emu
+    install -Dm 444 -t $out/share/doc/${pname} README.md
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "The official emulator of CommanderX16 8-bit computer";
+    homepage = "https://www.commanderx16.com/forum/index.php?/home/";
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ AndersonTorres ];
+    mainProgram = "x16emu";
+    inherit (SDL2.meta) platforms;
+  };
+
+  passthru = {
+    # upstream project recommends emulator and rom synchronized;
+    # passing through the version is useful to ensure this
+    inherit version;
+  };
+}