[automerger skipped] make it clear mGpuMemTotalMap is R/O am: 538c8f72 -s ours

am skip reason: Merged-In I0484c629a02b84b59ca19b35e24a6496fbfd0990 with SHA-1 af8d3a70 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/25021312



Change-Id: Id21c3cf114ab563d238abf55a97d1bbe83bc4535
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>