Add IO interrupt controller support for Loongson 2k1000, differentTested-by: Ming Wang <wangming01@xxxxxxxxxxx>
from the 3a series is that 2K1000 has 64 interrupt sources, 0-31
correspond to the device tree liointc0 device node, and the other
correspond to liointc1 node.
Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
Signed-off-by: Qing Zhang <zhangqing@xxxxxxxxxxx>