net/ixgbe/base: report autoneg supported for X550
net/ixgbe/base: report autoneg supported for X550

Make sure ixgbe_device_supports_autoneg_fc() returns true for the device
IDs of X550EM_A_1G_T and X550EM_A_1G_T_L.

Signed-off-by: Xiao Wang <28aecb4e45c1566b6185c24680691da84bd4fcf8@intel.com>
Acked-by: Wenzhuo Lu <58cb9036bdff9a5412edc3b9f70e105ccf59954f@intel.com>

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