Merge "Update mainline prebuilts to build 7876847." am: 120df47453 am: 9ce599f16d am: 9b31999048

Original change: https://android-review.googlesource.com/c/platform/prebuilts/runtime/+/1879504

Change-Id: If2a7f62351006d879db4fac5e0ff2e1e8ab9cc13