net/txgbe: fix packet statistics
net/txgbe: fix packet statistics

Fix specific length packet statistics caused by wrong register
addresses.

Fixes: 24a4c76aff4d ("net/txgbe: add error types and registers")
Cc: stable@dpdk.org

Signed-off-by: Jiawen Wu <e08370b1e60b2c0af0f9ad12ac294aabba4f34b2@trustnetic.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk