x86/percpu: Introduce the pcpu_binary_op() macro

Introduce the pcpu_binary_op() macro, a copy of the percpu_to_op() macro.

Update percpu binary operators to use the new macro, since
percpu_to_op() will be re-purposed as a raw percpu write accessor
in a follow-up patch.

No functional change intended.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20240430091833.196482-1-ubizjak@gmail.com