Merge branch 'r8169-refactor-and-improve-interrupt-coalescing'

Heiner Kallweit says:

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r8169: refactor and improve interrupt coalescing

Refactor and improve interrupt coalescing.
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Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>