[LSC] Add LOCAL_LICENSE_KINDS to external/modp_b64

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: Ie16eeafcf0ca2330352b4daabb1525698db691c5
1 file changed