Make feature/buster build

The patches I made make at least feature/buster branch build again an iso, that boots.

Feature Branch: https://0xacab.org/Hefee/tails/tree/feature/buster

Attachments

• 0001-Upgrade-Linux-to-4.18.0-2.patch

Related issues

• Blocks #5463 (closed)
• Blocks #15944 (closed)
• Blocks #15187 (closed)
• Blocks #15507 (closed)
• Blocks #14991 (closed)

Original created by @Hefee on 15857 (Redmine)