net/tap: fix dev name look-up

net/tap: fix dev name look-up

Store the device name in dev->data->name, to have symmetrical behavior
between rte_pmd_tap_probe(name) and rte_pmd_tap_remove(name).

The netdevice name (linux interface name) is stored in the name field of
struct pmd_internals.

snprintf(data->name) has been moved closer to the rte_ethdev_allocate()
as it should use the same name.

Fixes: 02f96a0a82d1 ("net/tap: add TUN/TAP device PMD")

Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
Acked-by: Keith Wiles <keith.wiles@intel.com>