Merge "Updated the document regarding T data stack" into tm-dev am: 5a1a044e...

Merge "Updated the document regarding T data stack" into tm-dev am: 5a1a044e am: 3e6c7a26 am: 1288e744 am: 8a0f6fed

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/18436120



Change-Id: I40860cd101d442b49644b34e25b4b4cbcb44329e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>