Merge tag 'arc-5.18-rc4' of git://

Pull ARC fixes from Vineet Gupta:

 - Assorted fixes

* tag 'arc-5.18-rc4' of git://
  ARC: remove redundant READ_ONCE() in cmpxchg loop
  ARC: atomic: cleanup atomic-llsc definitions
  arc: drop definitions of pgd_index() and pgd_offset{, _k}() entirely
  ARC: dts: align SPI NOR node name with dtschema
  ARC: Remove a redundant memset()
  ARC: fix typos in comments
  ARC: entry: fix syscall_trace_exit argument