MIPS: Netlogic: Use cpumask_scnprintf for wakeup_mask

Use standard function to print cpumask. Also fixup a typo in the same
file.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: g@linux-mips.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6909/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>