net/sfc: use NIC event descriptor size instead of common
net/sfc: use NIC event descriptor size instead of common

Use of the macro for calculating a Rx queue size is deprecated. Replace
it with a call to a function that uses descriptor size specified for
every NIC.

Signed-off-by: Igor Romanov <945ea196dab32ad63762a1b623439a95515e898a@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <ac94ab2a8fe9a9a087f6e24dcbc16626b52c07e8@solarflare.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk