Merge "Add the missing copyright headers to the .S files." into main am: aadb2046

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2767705



Change-Id: If0e4e49aa1e5a9a9614c6c46b9702d357c657841
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>