Added SPDX-license-identifier-MIT SPDX-license-identifier-Unlicense to:
  Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: Idd8d41bb31be0f9e37c1bacb5b135b56d725b982