[PATCH v4 3/4] riscv/barrier: Consolidate fence definitions

[Eric Chan]

Hi Samuel,

  Thanks for pointing out the negligence, I think we should keep the optimization.
  I've updated patch v5 at [0].
  Thank for the reviewing and suggestions.

[0] [https://lore.kernel.org/lkml/20240213223810.2595804-1-ericchancf@google.com/]

Sincerely,
  Eric Chan