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/servers/krill/default.nix

@@ -0,0 +1,42 @@
+{ lib
+, rustPlatform
+, fetchFromGitHub
+, openssl
+, pkg-config
+, stdenv
+, Security
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "krill";
+  version = "0.9.4";
+
+  src = fetchFromGitHub {
+    owner = "NLnetLabs";
+    repo = pname;
+    rev = "v${version}";
+    hash = "sha256:1w5s4vmr126k5lnxsv3hfxx1yz2c1gp3hmwfz5jn4lar78r5kidy";
+  };
+
+  cargoSha256 = "sha256:0ksh68giq3yd8k7vynxdl13ccysl6i5ag2nz9nknbnrvpv201c88";
+
+  buildInputs = [ openssl ] ++ lib.optional stdenv.isDarwin Security;
+  nativeBuildInputs = [ pkg-config ];
+
+  # Needed to get openssl-sys to use pkgconfig.
+  OPENSSL_NO_VENDOR = 1;
+
+  meta = with lib; {
+    description = "RPKI Certificate Authority and Publication Server written in Rust";
+    longDescription = ''
+      Krill is a free, open source RPKI Certificate Authority that lets you run
+      delegated RPKI under one or multiple Regional Internet Registries (RIRs).
+      Through its built-in publication server, Krill can publish Route Origin
+      Authorisations (ROAs) on your own servers or with a third party.
+    '';
+    homepage = "https://github.com/NLnetLabs/krill";
+    changelog = "https://github.com/NLnetLabs/krill/blob/v${version}/Changelog.md";
+    license = licenses.mpl20;
+    maintainers = with maintainers; [ steamwalker ];
+  };
+}