Merge "Zero memory in dma_alloc." am: 07803290a8

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2591888

Change-Id: I850a084acd60e6d3f8c3e9a7dd42054d69baeba6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>