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/package-management/nixops/nixops-dns.nix

@@ -0,0 +1,25 @@
+{ lib
+, buildGoPackage
+, fetchFromGitHub }:
+
+buildGoPackage rec {
+  pname = "nixops-dns";
+  version = "1.0";
+
+  goDeps = ./deps.nix;
+  goPackagePath = "github.com/kamilchm/nixops-dns";
+
+  src = fetchFromGitHub {
+    owner = "kamilchm";
+    repo = "nixops-dns";
+    rev = "v${version}";
+    sha256 = "1fyqwk2knrv40zpf71a56bjyaycr3p6fzrqq7gaan056ydy83cai";
+  };
+
+  meta = with lib; {
+    homepage = "https://github.com/kamilchm/nixops-dns/";
+    description = "DNS server for resolving NixOps machines";
+    license = licenses.mit;
+    maintainers = with maintainers; [ kamilchm sorki ];
+  };
+}