net/sfc: remove EvQ info array to simplify reconfigure

net/sfc: remove EvQ info array to simplify reconfigure

EvQ info array keeps information about EvQ centralized, however
EvQ pointers are available in TxQ and RxQ structures. Single
array for all EvQs complicates device reconfigure handling, so
simply git rid of it.

It removes notion of EvQ software index since there is no EvQ
array in software any more.

Fixes: 58294ee65afb ("net/sfc: support event queue")
Fixes: 9a75f75cb1f2 ("net/sfc: maintain management event queue")
Fixes: ce35b05c635e ("net/sfc: implement Rx queue setup release operations")
Fixes: 28944ac098aa ("net/sfc: implement Rx queue start and stop operations")
Fixes: b1b7ad933b39 ("net/sfc: set up and release Tx queues")
Fixes: fed9aeb46c19 ("net/sfc: implement transmit path start / stop")
Fixes: 3b809c27b1fe ("net/sfc: support link status change interrupt")
Cc: stable@dpdk.org
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>