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/audio/mamba/default.nix

@@ -0,0 +1,41 @@
+{ lib, stdenv
+, fetchFromGitHub
+, pkg-config
+, xxd
+, cairo
+, fluidsynth
+, libX11
+, libjack2
+, alsa-lib
+, liblo
+, libsigcxx
+, libsmf
+}:
+
+stdenv.mkDerivation rec {
+  pname = "mamba";
+  version = "2.2";
+
+  src = fetchFromGitHub {
+    owner = "brummer10";
+    repo = "Mamba";
+    rev = "v${version}";
+    sha256 = "1885qxyfkpslzk0aaaaws0x73b10h9nbr04jkk7xhkya25gf280m";
+    fetchSubmodules = true;
+  };
+
+  nativeBuildInputs = [ pkg-config xxd ];
+  buildInputs = [ cairo fluidsynth libX11 libjack2 alsa-lib liblo libsigcxx libsmf ];
+
+  makeFlags = [ "PREFIX=$(out)" ];
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    homepage = "https://github.com/brummer10/Mamba";
+    description = "Virtual MIDI keyboard for Jack Audio Connection Kit";
+    license = licenses.bsd0;
+    maintainers = with maintainers; [ magnetophon orivej ];
+    platforms = platforms.linux;
+  };
+}