net/sfc: add NUMA-aware registry of service logical cores

The driver requires service cores for housekeeping. Share these
cores for many adapters and various purposes to avoid extra CPU
overhead.

S

net/sfc: add NUMA-aware registry of service logical cores

The driver requires service cores for housekeeping. Share these
cores for many adapters and various purposes to avoid extra CPU
overhead.

Since housekeeping services will talk to NIC, it should be possible
to choose logical core on matching NUMA node.

Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
Reviewed-by: Ivan Malov <ivan.malov@oktetlabs.ru>

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