[Feature Request] Change partition table to GUID.

Now when Android for switch has been released, it would be great to have an ability to "merge" both OSes on a single SDcard. It looks relatively easy,-move partitions, edit u-boot configs and voila! However it's not so easy because of partition tables. L4T Ubuntu uses MBR while Android uses GPT, so it would be great if L4T Ubuntu was "upgraded" to GPT either.