net/i40e: add missing 25G link speed
net/i40e: add missing 25G link speed

Add missing 25G link speed decode in i40evf_dev_link_update.

Fixes: 75d133dd3296 ("net/i40e: enable 25G device")
Cc: stable@dpdk.org

Signed-off-by: Qi Zhang <9e9e58ffa71a29bb7b87766b362515be648fcbe0@intel.com>

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