Merge "Define __INTRODUCED_IN_LLNDK" into main am: fb97c97932

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2975232

Change-Id: Ia41f02cdcb1053272e985bf55ab977c009f28a22
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>