Merge changes from topic "lw/errata_refactor" into integration

* changes:
  refactor(cpus): convert Neoverse-N1 to use helpers
  refactor(cpus): convert Neoverse-N1 to framework
  refactor(cpus): reorder Neoverse-N1 .S file
  refactor(cpus): convert Neoverse-E1 to framework