Merge "Reserves memory for external buffers" into rvc-dev am: 5f86b51408 am: 79de2730fe am: 502d371abe

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/11925286

Change-Id: I98008de46f79bd14cc546081b48a7291515f26ab