Big cleanup of our cache maintenance routines, which were confusingly
named and inconsistent in their implementations.

* for-next/caches:
  arm64: Rename arm64-internal cache maintenance functions
  arm64: Fix cache maintenance function comments
  arm64: sync_icache_aliases to take end parameter instead of size
  arm64: __clean_dcache_area_pou to take end parameter instead of size
  arm64: __clean_dcache_area_pop to take end parameter instead of size
  arm64: __clean_dcache_area_poc to take end parameter instead of size
  arm64: __flush_dcache_area to take end parameter instead of size
  arm64: dcache_by_line_op to take end parameter instead of size
  arm64: __inval_dcache_area to take end parameter instead of size
  arm64: Fix comments to refer to correct function __flush_icache_range
  arm64: Move documentation of dcache_by_line_op
  arm64: assembler: remove user_alt
  arm64: Downgrade flush_icache_range to invalidate
  arm64: Do not enable uaccess for invalidate_icache_range
  arm64: Do not enable uaccess for flush_icache_range
  arm64: Apply errata to swsusp_arch_suspend_exit
  arm64: assembler: add conditional cache fixups
  arm64: assembler: replace `kaddr` with `addr`