[automerger skipped] Add PACK operation to NNAPI feature level 6. am: a8cf3aefd8 -s ours am: 2276e93f87 -s ours

am skip reason: Merged-In Ic15d047b70c62437b4f0db6f2ca10127591ae07c with SHA-1 0af4ac2ec4 is already in history

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2103845

Change-Id: I0deced1b984f2d08330018a360feade25affd93d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>