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/smooth/default.nix

@@ -0,0 +1,43 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, pkg-config
+
+, gtk3
+, curl
+, libxml2
+}:
+
+stdenv.mkDerivation rec {
+  pname = "smooth";
+  version = "0.9.9";
+
+  src = fetchFromGitHub {
+    owner = "enzo1982";
+    repo = "smooth";
+    rev = "v${version}";
+    sha256 = "sha256-30qVXK54SDL2+ZPbTINZix4Ax1iOMg2WLeEDyAr77Og=";
+  };
+
+  nativeBuildInputs = [
+    pkg-config
+  ];
+
+  makeFlags = [
+    "prefix=$(out)"
+  ];
+
+  buildInputs = [
+    gtk3
+    curl
+    libxml2
+  ];
+
+  meta = with lib; {
+    description = "The smooth Class Library";
+    license = licenses.artistic2;
+    homepage = "http://www.smooth-project.org/";
+    maintainers = with maintainers; [ shamilton ];
+    platforms = platforms.linux;
+  };
+}