[LSC] Add LOCAL_LICENSE_KINDS to external/python/futures

Added SPDX-license-identifier-Apache-2.0 SPDX-license-identifier-PSF-2.0 to:
  Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: I978c3339c8bc703e0b744b3e977431498cca5b8a
1 file changed