Merge "Updated the document regarding T data stack" into tm-dev am: fa4a7135 am: aa1e4170

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18439685



Change-Id: I1be3057f9fb663198bb6a09b6f443fa1bb88828b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>