ARC: leftover reference on ARC_IPI_DBG

[Valentin Rothberg]

Hi Vineet,

your commit 0443ad7fb2eb ("ARC: SMP: No need for CONFIG_ARC_IPI_DBG")
has shown up in todays linux-next tree (i.e., next-20160224) and removes
the Kconfig option ARC_IPI_DBG and all referencing #ifdefs but one:

arch/arc/kernel/mcip.c:58:#ifdef CONFIG_ARC_IPI_DBG
arch/arc/kernel/mcip.c-59-      if (ipi_was_pending)
arch/arc/kernel/mcip.c-60-              pr_info("IPI ACK delayed from cpu %d\n", cpu);
arch/arc/kernel/mcip.c-61-#endif
arch/arc/kernel/mcip.c-62-}

If you want to, I can send a trivial patch removing either the entire
block or just the CPP macros.

I detected the issue with scripts/checkkconfigsymbols.py by diffing
yesterdays and todays next tree.

Best regards,
 Valentin