Merge "Modify docs to clarify rules around placing calls to CF MMI codes" into main am: a0b29244af am: e9e474e82d am: 78e475aac9

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

Change-Id: If11a08f80692e28fa0e0dbc27c2ae807cf4979f5
Signed-off-by: Automerger Merge Worker <[email protected]>