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/tools/video/dvgrab/default.nix

@@ -0,0 +1,40 @@
+{ fetchFromGitHub, lib, stdenv, libunwind, libraw1394, libjpeg, libiec61883, libdv
+, libavc1394, pkg-config, autoreconfHook }:
+
+stdenv.mkDerivation {
+  pname = "dvgrab";
+  version = "2016-05-16";
+
+  src = fetchFromGitHub {
+    # mirror of original project with some build fixes
+    owner = "ddennedy";
+    repo = "dvgrab";
+    rev = "e46042e0c7b3523b6854ee547b0534e8310b7460";
+    sha256 = "17qy76fjpzrbxm4pj0ljx5lbimxryv24fvr13jwkh24j85dxailn";
+  };
+
+  buildInputs = [
+    libunwind libraw1394 libjpeg libiec61883 libdv libavc1394
+  ];
+
+  nativeBuildInputs = [
+    autoreconfHook pkg-config
+  ];
+
+  meta = with lib; {
+    description = "Receive and store audio & video over IEEE1394";
+
+    longDescription = ''
+      dvgrab receives audio and video data from a digital camcorder via an
+      IEEE1394 (widely known as FireWire) or USB link and stores them into
+      one of several file formats. It features autosplit of long video
+      sequences, and supports saving the data as raw frames, AVI type 1,
+      AVI type 2, Quicktime DV, a series of JPEG stills or MPEG2-TS.
+    '';
+
+    homepage = "https://github.com/ddennedy/dvgrab"; # Formerly http://www.kinodv.org/
+
+    license = licenses.gpl2Plus;
+    platforms = platforms.gnu ++ platforms.linux;
+  };
+}