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/genpass/default.nix

@@ -0,0 +1,28 @@
+{ lib, stdenv
+, fetchgit
+, rustPlatform
+, CoreFoundation
+, libiconv
+, Security
+}:
+rustPlatform.buildRustPackage rec {
+  pname = "genpass";
+  version = "0.5.1";
+
+  src = fetchgit {
+    url = "https://git.sr.ht/~cyplo/genpass";
+    rev = "v${version}";
+    sha256 = "UyEgOlKtDyneRteN3jHA2BJlu5U1HFL8HA2MTQz5rns=";
+  };
+
+  cargoSha256 = "ls3tzZ+gtZQlObmbtwJDq6N/f5nY+Ps7RL5R/fR5Vgg=";
+
+  buildInputs = lib.optionals stdenv.isDarwin [ CoreFoundation libiconv Security ];
+
+  meta = with lib; {
+    description = "A simple yet robust commandline random password generator";
+    homepage = "https://sr.ht/~cyplo/genpass/";
+    license = licenses.agpl3Only;
+    maintainers = with maintainers; [ cyplo ];
+  };
+}