Clarify licensing wrt. recent policy change. am: 9b88cbd1bf am: 7b8749023d am: 9deef1b3d1 am: 730bfc804f

Original change: https://android-review.googlesource.com/c/platform/external/oj-libjdwp/+/2221394

Change-Id: Ic06c4de8faab0876777f15fc11981afb2055129b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>