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/alcotest/mirage.nix

@@ -0,0 +1,16 @@
+{ lib, buildDunePackage, alcotest, lwt, logs, mirage-clock, duration }:
+
+buildDunePackage {
+  pname = "alcotest-mirage";
+
+  inherit (alcotest) version src useDune2;
+
+  propagatedBuildInputs = [ alcotest lwt logs mirage-clock duration ];
+
+  doCheck = true;
+
+  meta = alcotest.meta // {
+    description = "Mirage implementation for Alcotest";
+    maintainers = with lib.maintainers; [ ulrikstrid anmonteiro ];
+  };
+}