Merge "Include sdk-preprocess-files.mk before process sdk.atree" into main am: 8e0ce358

Original change: https://android-review.googlesource.com/c/platform/build/+/3113080



Change-Id: Ibff56dd869895c5bf1cb77190d91aff6e026e81b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>