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/graphics/kgraphviewer/default.nix

@@ -0,0 +1,36 @@
+{ lib, mkDerivation, fetchurl, cmake, extra-cmake-modules, pkg-config, wrapGAppsHook
+, kconfig, kinit, kdoctools, kio, kparts, kwidgetsaddons
+, qtbase, qtsvg
+, boost, graphviz
+}:
+
+mkDerivation rec {
+  pname = "kgraphviewer";
+  version = "2.4.3";
+
+  src = fetchurl {
+    url = "mirror://kde/stable/kgraphviewer/${version}/${pname}-${version}.tar.xz";
+    sha256 = "1h6pgg89gvxl8gw7wmkabyqqrzad5pxyv5lsmn1fl4ir8lcc5q2l";
+  };
+
+  buildInputs = [
+    qtbase qtsvg
+    boost graphviz
+  ];
+
+  nativeBuildInputs = [
+    cmake extra-cmake-modules pkg-config wrapGAppsHook
+    kdoctools
+  ];
+
+  propagatedBuildInputs = [
+    kconfig kinit kio kparts kwidgetsaddons
+  ];
+
+  meta = with lib; {
+    description = "A Graphviz dot graph viewer for KDE";
+    license     = licenses.gpl2;
+    maintainers = with maintainers; [ ];
+    platforms   = platforms.linux;
+  };
+}