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/development/ocaml-modules/ipaddr/default.nix

@@ -0,0 +1,20 @@
+{ lib, buildDunePackage
+, macaddr, domain-name, stdlib-shims
+, ounit, ppx_sexp_conv
+}:
+
+buildDunePackage rec {
+  pname = "ipaddr";
+
+  inherit (macaddr) version src;
+
+  propagatedBuildInputs = [ macaddr domain-name stdlib-shims ];
+
+  checkInputs = [ ppx_sexp_conv ounit ];
+  doCheck = true;
+
+  meta = macaddr.meta // {
+    description = "A library for manipulation of IP (and MAC) address representations ";
+    maintainers = with lib.maintainers; [ alexfmpe ericbmerritt ];
+  };
+}