Merge "Allow mediacodec to allocate from the DMA-BUF system heap" am: cf7118cc65 am: 6c6a476983

Original change: https://android-review.googlesource.com/c/platform/system/sepolicy/+/1550519

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I5e6d376af5b46c085303fcd5988d35cb7b154978