Merge branch 'for-next/stacktrace' into for-next/core

Relax frame record alignment requirements to facilitate 8-byte alignment
with KASAN and Clang.

* for-next/stacktrace:
  arm64: stacktrace: Relax frame record alignment requirement to 8 bytes
  arm64: Change the on_*stack functions to take a size argument
  arm64: Implement stack trace termination record