Merge tag 'arc-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:

 - arch_atomic64_cmpxchg relaxed variant [Jason]

 - use of inbuilt swap in stack unwinder  [Yu-Chun Lin]

 - use of __ASSEMBLER__ in kernel headers [Thomas Huth]

* tag 'arc-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: Replace __ASSEMBLY__ with __ASSEMBLER__ in the non-uapi headers
  ARC: Replace __ASSEMBLY__ with __ASSEMBLER__ in uapi headers
  ARC: unwind: Use built-in sort swap to reduce code size and improve performance
  ARC: atomics: Implement arch_atomic64_cmpxchg using _relaxed