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/development/libraries/libqglviewer/default.nix

@@ -0,0 +1,28 @@
+{ lib, stdenv, fetchurl, qmake, qtbase, libGLU, AGL }:
+
+stdenv.mkDerivation rec {
+  pname = "libqglviewer";
+  version = "2.7.2";
+
+  src = fetchurl {
+    url = "http://www.libqglviewer.com/src/libQGLViewer-${version}.tar.gz";
+    sha256 = "023w7da1fyn2z69nbkp2rndiv886zahmc5cmira79zswxjfpklp2";
+  };
+
+  nativeBuildInputs = [ qmake ];
+  buildInputs = [ qtbase libGLU ]
+    ++ lib.optional stdenv.isDarwin AGL;
+
+  dontWrapQtApps = true;
+
+  postPatch = ''
+    cd QGLViewer
+  '';
+
+  meta = with lib; {
+    description = "C++ library based on Qt that eases the creation of OpenGL 3D viewers";
+    homepage = "http://libqglviewer.com";
+    license = licenses.gpl2;
+    platforms = platforms.all;
+  };
+}