netdev-dpdk: receive up to NETDEV_MAX_RX_BATCH

As per netdev-provider interface, netdev_dpdk_rxq_recv should receive at most
NETDEV_MAX_RX_BATCH.

Signed-off-by: Daniele Di Proietto <ddiproietto@vmware.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
netdev-dpdk: create queues on configured NUMA node

This patch makes sure that the tx and rx queues are allocated on the NUMA socket
chosen at device initalization time, instead of the NUMA socket 0.

Signed-off-by: Daniele Di Proietto <ddiproietto@vmware.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>