[automerger skipped] Add total size of DMA-BUFs exported to 'dumpsys meminfo' am: 363d44d7a0 am: 8bff83e9ff am: 5e4dadb0a0 -s ours

am skip reason: Change-Id I3439a8f00cf1aef37e5043b505ed53d47a8a4756 with SHA-1 9da0f3a6d4 is in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1564878

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I7ce9fa1245767a41dc63ed0568646c4d27320fd9