[LSC] Add LOCAL_LICENSE_KINDS to external/blktrace

Added SPDX-license-identifier-GPL SPDX-license-identifier-GPL-2.0
    SPDX-license-identifier-LGPL legacy_unencumbered
to:
  Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: I311e12c23a640eadd2899c2f9c3663038caafcc0
1 file changed