MIPS: Netlogic: Move coremask setup to nlm_node_init

This is needed for nlm_node_present(0) to work on uniprocessor compile.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6861/


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