Merge "Move the creation of the root structure to build/core/main.mk" into...

Merge "Move the creation of the root structure to build/core/main.mk" into main am: 963298af am: 2af5d106

Original change: https://android-review.googlesource.com/c/platform/build/+/3261773



Change-Id: I4ae21b49d5963f10c3c554d10b7b09e80fbd6633
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>