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/filesystems/convoy/default.nix

@@ -0,0 +1,26 @@
+# This file was generated by go2nix.
+{ lib, buildGoPackage, fetchFromGitHub, lvm2 }:
+
+buildGoPackage rec {
+  pname = "convoy";
+  version = "0.5.2";
+
+  goPackagePath = "github.com/rancher/convoy";
+
+  src = fetchFromGitHub {
+    rev = "v${version}";
+    owner = "rancher";
+    repo = "convoy";
+    sha256 = "09nygrxd5hril4xcfsvgjg74xxhhimznqq4sdk0f360c5ra0dbhj";
+  };
+
+  buildInputs = [lvm2];
+
+  meta = with lib; {
+    homepage = "https://github.com/rancher/convoy";
+    description = "A Docker volume plugin, managing persistent container volumes";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ offline ];
+    platforms = platforms.linux;
+  };
+}