Limit the number of autoconfigured queues to 8.
Limit the number of autoconfigured queues to 8.

This limit was in a previous version of the driver, but it is being re-
added to match the behavior of previous versions of 10. It prevents the
driver from using too many MSI-X vectors on systems with a large number of
logical CPU cores.

Thanks to <jwd@slowblink.com> for bringing up this issue.

Approved by:	jfv (mentor)

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