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/misc/mpvc/default.nix

@@ -0,0 +1,31 @@
+{ lib, stdenv, socat, fetchFromGitHub, makeWrapper }:
+
+stdenv.mkDerivation {
+  pname = "mpvc";
+  version = "unstable-2017-03-18";
+
+  src = fetchFromGitHub {
+    owner = "wildefyr";
+    repo = "mpvc";
+    rev = "aea5c661455248cde7ac9ddba5f63cc790d26512";
+    sha256 = "0qiyvb3ck1wyd3izajwvlq4bwgsbq7x8ya3fgi5i0g2qr39a1qml";
+  };
+
+  makeFlags = [ "PREFIX=$(out)" ];
+  installFlags = [ "PREFIX=$(out)" ];
+
+  postInstall = ''
+    wrapProgram $out/bin/mpvc --prefix PATH : "${socat}/bin/"
+  '';
+
+  nativeBuildInputs = [ makeWrapper ];
+  buildInputs = [ socat ];
+
+  meta = with lib; {
+    description = "A mpc-like control interface for mpv";
+    homepage = "https://github.com/wildefyr/mpvc";
+    license = licenses.mit;
+    maintainers = [ maintainers.neeasade ];
+    platforms = platforms.linux;
+  };
+}