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/graphics/scanbd/default.nix

@@ -0,0 +1,56 @@
+{ lib, stdenv, fetchurl, pkg-config
+, dbus, libconfuse, libjpeg, sane-backends, systemd }:
+
+stdenv.mkDerivation rec {
+  pname = "scanbd";
+  version = "1.5.1";
+
+  src = fetchurl {
+    sha256 = "0pvy4qirfjdfm8aj6x5rkbgl7hk3jfa2s21qkk8ic5dqfjjab75n";
+    url = "mirror://sourceforge/scanbd/${pname}-${version}.tgz";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ dbus libconfuse libjpeg sane-backends systemd ];
+
+  configureFlags = [
+    "--disable-Werror"
+    "--enable-udev"
+    "--with-scanbdconfdir=/etc/scanbd"
+    "--with-systemdsystemunitdir=$out/lib/systemd/system"
+  ];
+
+  enableParallelBuilding = true;
+
+  installFlags = [
+    "scanbdconfdir=$(out)/etc/scanbd"
+    "scannerconfdir=$(scanbdconfdir)/scanner.d"
+  ];
+
+  doCheck = true;
+
+  meta = with lib; {
+    description = "Scanner button daemon";
+    longDescription = ''
+      scanbd polls a scanner's buttons, looking for button presses, function
+      knob changes, or other scanner events such as paper inserts and removals,
+      while at the same time allowing scan-applications to access the scanner.
+
+      Various actions can be submitted (scan, copy, email, ...) via action
+      scripts. The function knob values are passed to the action scripts as
+      well. Scan actions are also signaled via dbus. This can be useful for
+      foreign applications. Scans can also be triggered via dbus from foreign
+      applications.
+
+      On platforms which support signaling of dynamic device insertion/removal
+      (libudev, dbus, hal), scanbd supports this as well.
+
+      scanbd can use all sane-backends or some special backends from the (old)
+      scanbuttond project.
+    '';
+    homepage = "http://scanbd.sourceforge.net/";
+    downloadPage = "https://sourceforge.net/projects/scanbd/";
+    license = licenses.gpl2Plus;
+    platforms = platforms.linux;
+  };
+}