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/security/stegseek/default.nix

@@ -0,0 +1,44 @@
+{ lib, stdenv
+, cmake
+, fetchFromGitHub
+, libjpeg
+, libmcrypt
+, libmhash
+, libtool
+, zlib
+}:
+
+stdenv.mkDerivation rec {
+  pname = "stegseek";
+  version = "0.6";
+
+  src = fetchFromGitHub {
+    owner = "RickdeJager";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-B5oJffYOYfsH0YRq/Bq0ciIlCsCONyScFBjP7a1lIzo=";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  buildInputs = [
+    libjpeg
+    libmcrypt
+    libmhash
+    libtool
+    zlib
+  ];
+
+  doCheck = true;
+
+  meta = with lib; {
+    description = "Tool to crack steganography";
+    longDescription = ''
+      Stegseek is a lightning fast steghide cracker that can be
+      used to extract hidden data from files.
+    '';
+    homepage = "https://github.com/RickdeJager/stegseek";
+    license = with licenses; [ gpl2Only ];
+    maintainers = with maintainers; [ fab ];
+  };
+}