[LSC] Add LOCAL_LICENSE_KINDS to external/webp

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

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: I0b194d64e433597957db2e3d34f8009de4980a94
1 file changed