Fix to assign dummy Rx/Tx handlers in dev_stop.
For MTU set, assignment of the appropriate Rx/Tx handlers will be
handled by dev_start/dev_stop.
Fixes: 81f8804992 ("net/qede: enhance Rx CPU utilization")
Fixes: 8de0c42019 ("net/qede: fix odd number of queues usage in 100G mode")
Cc: stable@dpdk.org
Signed-off-by: Rasesh Mody <rmody@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>