Merge "dumpsys: Print total DMA-BUFs exported from the DMA-BUF heaps framework" am: 2a2456d3a4 am: 2d4714ec65

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1584522

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I6884503e2df2b28465443d7cea2393d39ffbffcd