Merge "make it clear mGpuMemTotalMap is R/O" into main am: ecf372879b am: a777f26e1e am: dad3fddf8e

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2765953

Change-Id: I04b38acdd6a35822f68ff02d5b73e1a049f66f6b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>