[automerger skipped] AIDL bufferpool implementation (just copy from HIDL impl) am: 97e1dfb99d am: d0e142bc3d -s ours

am skip reason: Merged-In I48841189a8743dcd6533a9e61581e48f0f1717f1 with SHA-1 8fc3ca470d is already in history

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2680937

Change-Id: I78526083f2c4de898388f115733c4d41b8a82e7e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>