dpdk: fix update link state
dpdk: fix update link state

Type: fix

Correct vnet_hw_interface_t flags update on link state changes.
Currently incomplete set of flags is applied on each change,
only flags related to the most recent change are being set correct.
E.g. setting the link up would erase the duplex part of the flags.

Signed-off-by: Alexander Skorichenko <703d2a24b0b1535fae547c8bf104fbdbca084b7c@netgate.com>
Change-Id: I5b95e1c0eaea0c283b108dbf7f809682ec9064eb

FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp