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/stayrtr/default.nix

@@ -0,0 +1,36 @@
+{ lib
+, fetchFromGitHub
+, buildGoModule
+, stayrtr
+, testers
+}:
+
+buildGoModule rec {
+  pname = "stayrtr";
+  version = "0.3.0";
+
+  src = fetchFromGitHub {
+    owner = "bgp";
+    repo = "stayrtr";
+    rev = "v${version}";
+    sha256 = "10ndb8p7znnjycwg56m63gzqf9zc6lq9mcvz4n48j0c4il5xyn8x";
+  };
+  vendorSha256 = "1nwrzbpqycr4ixk8a90pgaxcwakv5nlfnql6hmcc518qrva198wp";
+
+  ldflags = [
+    "-s"
+    "-w"
+    "-X main.version=${version}"
+  ];
+
+  passthru.tests.version = testers.testVersion {
+    package = stayrtr;
+  };
+
+  meta = with lib; {
+    description = "Simple RPKI-To-Router server. (Hard fork of GoRTR)";
+    homepage = "https://github.com/bgp/stayrtr/";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ _0x4A6F ];
+  };
+}