net/cxgbe: report configured link auto-negotiation
net/cxgbe: report configured link auto-negotiation

Report current configured link auto-negotiation. Also initialize
rte_eth_link.

Coverity issue: 280648
Fixes: f5b3c7b29357 ("net/cxgbevf: fix inter-VM traffic when physical link down")
Cc: stable@dpdk.org

Signed-off-by: Rahul Lakkireddy <3a6b348815dc68871481a310c146a6b821ba8f72@chelsio.com>

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