Revert "Remove lz4 prebuilts"

This reverts commit ab6ee433e351e29a2d35fb654a9db666f1a7904d.

Reason for revert:
  It breaks the bootimage_arm64-user target in the branch aosp-master-boot

Change-Id: Ia2124b6adfe3e2b12da443b6d8e17dbafb1c0b52
7 files changed