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/doona/default.nix

@@ -0,0 +1,36 @@
+{ fetchFromGitHub
+, lib, stdenv
+, perl
+}:
+
+stdenv.mkDerivation rec {
+  pname = "doona";
+  version = "unstable-2019-03-08";
+
+  src = fetchFromGitHub {
+    owner = "wireghoul";
+    repo = pname;
+    rev = "master";
+    sha256 = "0x9irwrw5x2ia6ch6gshadrlqrgdi1ivkadmr7j4m75k04a7nvz1";
+  };
+
+  buildInputs = [ perl ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp -r ${src}/bedmod $out/bin/bedmod
+    cp ${src}/doona.pl $out/bin/doona
+    chmod +x $out/bin/doona
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/wireghoul/doona";
+    description = "A fork of the Bruteforce Exploit Detector Tool (BED)";
+    longDescription = ''
+      A fork of the Bruteforce Exploit Detector Tool (BED).
+      BED is a program which is designed to check daemons for potential buffer overflows, format string bugs etc.
+    '';
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ pamplemousse ];
+  };
+}