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/cmt/default.nix

@@ -0,0 +1,33 @@
+{ lib, stdenv
+, fetchurl
+, ladspaH
+}:
+
+stdenv.mkDerivation rec {
+  pname = "cmt";
+  version = "1.17";
+
+  src = fetchurl {
+    url = "http://www.ladspa.org/download/cmt_${version}.tgz";
+    sha256 = "07xd0xmwpa0j12813jpf87fr9hwzihii5l35mp8ady7xxfmxfmpb";
+  };
+
+  buildInputs = [ ladspaH ];
+
+  preBuild = ''
+    cd src
+  '';
+
+  installFlags = [ "INSTALL_PLUGINS_DIR=${placeholder "out"}/lib/ladspa" ];
+  preInstall = ''
+    mkdir -p $out/lib/ladspa
+  '';
+
+  meta = with lib; {
+    description = "Computer Music Toolkit";
+    homepage = "https://www.ladspa.org/cmt";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ sjfloat ];
+  };
+}