i40e: take into account XDP Tx queues when stopping rings

Seth reported that on his side XDP traffic can not survive a round of
down/up against i40e interface. Dmesg output was telling us that we were
not able to disable the very first XDP ring. That was due to the fact
that in i40e_vsi_stop_rings() in a pre-work that is done before calling
i40e_vsi_wait_queues_disabled(), XDP Tx queues were not taken into the
account.

To fix this, let us distinguish between Rx and Tx queue boundaries and
take into the account XDP queues for Tx side.

Reported-by: Seth Forshee <[email protected]>
Closes: https://lore.kernel.org/netdev/ZbkE7Ep1N1Ou17sA@do-x1extreme/
Fixes: 65662a8dcdd0 ("i40e: Fix logic of disabling queues")
Tested-by: Seth Forshee <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Signed-off-by: Maciej Fijalkowski <[email protected]>
Reviewed-by: Ivan Vecera <[email protected]>
Tested-by: Chandan Kumar Rout <[email protected]> (A Contingent Worker at Intel)
Signed-off-by: Tony Nguyen <[email protected]>

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