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/sane/xsane.nix

@@ -0,0 +1,41 @@
+{ lib
+, stdenv
+, fetchurl
+, sane-backends
+, sane-frontends
+, libX11
+, gtk2
+, pkg-config
+, libpng
+, libusb-compat-0_1
+, gimpSupport ? false
+, gimp
+}:
+
+stdenv.mkDerivation rec {
+  pname = "xsane";
+  version = "0.999";
+
+  src = fetchurl {
+    url = "http://www.xsane.org/download/xsane-${version}.tar.gz";
+    sha256 = "0jrb918sfb9jw3vmrz0z7np4q55hgsqqffpixs0ir5nwcwzd50jp";
+  };
+
+  preConfigure = ''
+    sed -e '/SANE_CAP_ALWAYS_SETTABLE/d' -i src/xsane-back-gtk.c
+    chmod a+rX -R .
+  '';
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ libpng libusb-compat-0_1 sane-backends sane-frontends libX11 gtk2 ]
+    ++ lib.optional gimpSupport gimp;
+
+  meta = with lib; {
+    homepage = "http://www.sane-project.org/";
+    description = "Graphical scanning frontend for sane";
+    license = licenses.gpl2Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ ];
+  };
+}