ixgbe: fix x550em 10G NIC link status

With the NVM image for x550em XFI will not report
the auto-negotiation feature correctly. The auto-negotiation
should be "No" for supports and advertised items.
At the same time update speed makes it support 1G and 10G.

Signed-off-by: Piotr Skajewski <piotrx.skajewski@intel.com>
Signed-off-by: Guinan Sun <guinanx.sun@intel.com>
Reviewed-by: Wei Zhao <wei.zhao1@intel.com>

Approved by: imp
Obtained from: DPDK (fb03b51da940f1d56d701776fd85a0dfc1ace098)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D31621