Merge "aconfig: add assign_flag_ids function" into main am: 68570f67 am:...

Merge "aconfig: add assign_flag_ids function" into main am: 68570f67 am: 15736d6d am: aebe3622

Original change: https://android-review.googlesource.com/c/platform/build/+/2888807



Change-Id: I4b07a911fa3a5dbe3e2d62c6e3f468be48e19c8c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>