[LSC] Add LOCAL_LICENSE_KINDS to external/bzip2

Added SPDX-license-identifier-BSD legacy_unencumbered to:
  Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: I22d7c58f36a4227732ac28d9275d22d7b8d42423
1 file changed