Added SPDX-license-identifier-Apache-2.0 to:
Android.bp
Bug: 68860345
Bug: 151177513
Bug: 151953481
Test: m all
Exempt-From-Owner-Approval: janitorial work
Change-Id: I5c76b04bf104fa33f04515684dc2fa384e503ff2
Add an Android build file and a stand-in PackageVersion.java needed to
build. Also add OWNERS.
Test: build
Bug: 152747091
Change-Id: Ib46e1de1e124ea055a2377acd83fee7cb60c4c43