build: add optional NUMA and CPU counts detection

Add an option to automatically discover the host's NUMA and CPU counts
and use those values for a non cross-build.
Give users the option to override

build: add optional NUMA and CPU counts detection

Add an option to automatically discover the host's NUMA and CPU counts
and use those values for a non cross-build.
Give users the option to override the per-arch default values or values
from cross files by specifying them on the command line with -Dmax_lcores
and -Dmax_numa_nodes.

Signed-off-by: Juraj Linkeš <[email protected]>
Reviewed-by: Honnappa Nagarahalli <[email protected]>
Reviewed-by: David Christensen <[email protected]>
Acked-by: Bruce Richardson <[email protected]>

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