irqchip: hip04: Initialize hip04_cpu_map to 0xffff

HiP04 GIC extends to support 16 cores, so we should
initialize the hip04_cpu_map to 0xffff.

Signed-off-by: Wang Long <long.wanglong@huawei.com>
Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Link: https://lkml.kernel.org/r/1418295816-179583-1-git-send-email-long.wanglong@huawei.com


Signed-off-by: Jason Cooper <jason@lakedaemon.net>