net/ice/base: fix DCBx initialization

net/ice/base: fix DCBx initialization

When a port is not cabled, but DCBx is enabled in the firmware, the
status of DCBx will be NOT_STARTED. This is a valid state for FW
enabled and should not be treated as a is_fw_lldp true automatically.

Add the code to treat NOT_STARTED as another valid state.

Fixes: 1082f786547e ("net/ice/base: support DCB")
Cc: stable@dpdk.org
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Leyi Rong <leyi.rong@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>