MIPS: Netlogic: Fix interrupt table entry init

Used the hardware thread id passed in while writing to IRT in
nlm_pic_init_irt()

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4465


Signed-off-by: John Crispin <blogic@openwrt.org>