Merge "Modify docs to clarify rules around placing calls to CF MMI codes" into main am: a0b29244af

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2811013

Change-Id: If2b2e7d7ff1a4ce28b89cfc49820596ee7cfce04
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>