gpio-ml-ioh: Use NUMA_NO_NODE not GFP_KERNEL

Currently, GFP_KERNEL is used as parameter of irq_alloc_descs like below.

          irq_base = irq_alloc_descs(-1, IOH_IRQ_BASE, num_ports[j],
                                     GFP_KERNEL);

This is not true.
So, this patch uses NUMA_NO_NODE not GFP_KERNEL.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: David Rientjes <rientjes@google.com>
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>