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

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



Change-Id: I037fbb5e0b1059314813ac17aed95ca4716866b8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>