[LSC] Add LOCAL_LICENSE_KINDS to external/python/mock

Added SPDX-license-identifier-BSD to:
  Android.bp
  mock/Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: I1d1c4632b1f1bf4ffb0faa28f783961e09053013
2 files changed