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/misc/xkbd/default.nix

@@ -0,0 +1,30 @@
+{ lib, stdenv, fetchFromGitHub, freetype, libXrender, libXft, xorgproto
+, xinput, libXi, libXext, libXtst, libXpm, libX11, autoreconfHook
+}:
+
+stdenv.mkDerivation rec {
+  pname = "xkbd";
+  version = "0.8.18";
+
+  src = fetchFromGitHub {
+    owner = "mahatma-kaganovich";
+    repo = "xkbd";
+    rev = "${pname}-${version}";
+    sha256 = "05ry6q75jq545kf6p20nhfywaqf2wdkfiyp6iwdpv9jh238hf7m9";
+  };
+
+  buildInputs = [
+    freetype libXrender libXft libXext libXtst libXpm libX11
+    libXi xorgproto xinput
+  ];
+
+  nativeBuildInputs = [ autoreconfHook ];
+
+  meta = with lib; {
+    homepage = "https://github.com/mahatma-kaganovich/xkbd";
+    description = "onscreen soft keyboard for X11";
+    license = licenses.gpl2Plus;
+    maintainers = [ ];
+    platforms = platforms.linux;
+  };
+}