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/networking/nebula/default.nix

@@ -0,0 +1,42 @@
+{ lib, buildGoModule, fetchFromGitHub }:
+
+buildGoModule rec {
+  pname = "nebula";
+  version = "1.5.2";
+
+  src = fetchFromGitHub {
+    owner = "slackhq";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "kxBu+r99sC3XWDX+xTmhdUJx0HMVWA0Xgy7wgfrjZ5E=";
+  };
+
+  vendorSha256 = "5Yv2t5vdUNCcCo2KAm1xCkRVrt6gIasKHLqH7VVPDuU=";
+
+  subPackages = [ "cmd/nebula" "cmd/nebula-cert" ];
+
+  ldflags = [ "-X main.Build=${version}" ];
+
+  meta = with lib; {
+    description = "A scalable overlay networking tool with a focus on performance, simplicity and security";
+    longDescription = ''
+      Nebula is a scalable overlay networking tool with a focus on performance,
+      simplicity and security. It lets you seamlessly connect computers
+      anywhere in the world. Nebula is portable, and runs on Linux, OSX, and
+      Windows. (Also: keep this quiet, but we have an early prototype running
+      on iOS). It can be used to connect a small number of computers, but is
+      also able to connect tens of thousands of computers.
+
+      Nebula incorporates a number of existing concepts like encryption,
+      security groups, certificates, and tunneling, and each of those
+      individual pieces existed before Nebula in various forms. What makes
+      Nebula different to existing offerings is that it brings all of these
+      ideas together, resulting in a sum that is greater than its individual
+      parts.
+    '';
+    homepage = "https://github.com/slackhq/nebula";
+    license = licenses.mit;
+    maintainers = with maintainers; [ Br1ght0ne numinit ];
+  };
+
+}