net/tap: fix to populate FDs in secondary process

net/tap: fix to populate FDs in secondary process

When a tap device is hotplugged to primary process which in turn
adds the device to all secondary process, the secondary process
does a tap_mp_attach_queues, but the fds are not populated in
the primary during the probe they are populated during the queue_setup,
added a fix to sync the queues during rte_eth_dev_start

Fixes: 4852aa8f6e21 ("drivers/net: enable hotplug on secondary process")
Cc: stable@dpdk.org
Signed-off-by: Kumara Parameshwaran <kparameshwar@vmware.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>