net/ena: enable stats for multi-process mode
net/ena: enable stats for multi-process mode

Since statistic gathering is now proxied safely to primary process, it
can be enabled in secondary processes.

Signed-off-by: Stanislaw Kardach <0d18f8336f2f75f44655e0db45e62a88edb4ec0c@semihalf.com>
Reviewed-by: Michal Krawczyk <a91dcbb4df49d8bfe0a9930d7ff911a4292ca1f5@semihalf.com>
Reviewed-by: Shai Brandes <095e2ccee33c643430b6757419619b6d7f04079f@amazon.com>

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