ixgbe: wait longer for link after fiber MAC setup

ixgbe: wait longer for link after fiber MAC setup

After setting up the link on a fiber port, the maximum wait time for
the link to come up is 500 ms in ixgbe_setup_mac_link_multispeed_fiber().
On an x550 SFP+ port, this is often not sufficiently long for the link
to come up. This can result in never being able to retrieve accurate
link status for the port using rte_eth_link_get_nowait().

Increase the maximum wait time in ixgbe_setup_mac_link_multispeed_fiber()
to 1 s.

Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Approved by:	imp
Obtained from:	DPDK (64f1c8539c8ce99214b9eb1fb728a2c6745f3300)
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D31621