Merge "partition_tools: extend lpunpack for split partitions" am: d9481184ff am: 01806dea85 am: fc36f61291

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/2505925

Change-Id: I6d34f33fd7ee066b73ff15a4f416ad1894a1883c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>