The right size for a human readable MAC is RTE_ETHER_ADDR_FMT_SIZE.
While at it, the net library provides a helper for MAC address
formatting. Prefer it.
Fixes: 58b43c1ddfd1 ("ethdev: add telemetry endpoint for device info")
Cc: stable@dpdk.org
Reported-by: Christophe Fontaine <cfontain@redhat.com>
Signed-off-by: David Marchand <david.marchand@redhat.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
ffe77e911f