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/data/soundfonts/generaluser/default.nix

@@ -0,0 +1,25 @@
+{ lib, stdenv, fetchzip }:
+
+stdenv.mkDerivation rec {
+  pname = "generaluser";
+  version = "1.471";
+
+  # we can't use fetchurl since stdenv does not handle unpacking *.zip's by default.
+  src = fetchzip {
+    # Linked on http://www.schristiancollins.com/generaluser.php:
+    url = "https://www.dropbox.com/s/4x27l49kxcwamp5/GeneralUser_GS_${version}.zip";
+    sha256 = "sha256-lwUlWubXiVZ8fijKuNF54YQjT0uigjNAbjKaNjmC51s=";
+  };
+
+  installPhase = ''
+    install -Dm644 GeneralUser*.sf2 $out/share/soundfonts/GeneralUser-GS.sf2
+  '';
+
+  meta = with lib; {
+    description = "a SoundFont bank featuring 259 instrument presets and 11 drum kits";
+    homepage = "http://www.schristiancollins.com/generaluser.php";
+    license = licenses.generaluser;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ ckie ];
+  };
+}