i40e: Fix multiple link up messages

i40e: Fix multiple link up messages

Orabug: 22342532

This patch addresses an issue where multiple link up messages can be logged
resulting from aq link status timing when link properties are changed (fc,
speed, etc.); solved by using a single function to handle status printing
and adding a mechanism to track whether link state (up or down) has
actually changed.

Change-ID: Ied6ed6e49dc397c77d992adc0bc9ed3767152b9d
Signed-off-by: Matt Jared <matthew.a.jared@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit c156f856ad8ba4f71bcdb2c92ba1a9effaa29ac1)
Signed-off-by: Brian Maly <brian.maly@oracle.com>