ixgbe: Add support to retrieve and store LED link active

ixgbe: Add support to retrieve and store LED link active

Orabug: 24568240

This patch adds support to get the LED link active via the LEDCTL
register.  If the LEDCTL register does not have LED link active
(LED mode field = 0x0100) set then default LED link active returned.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 805cedd663549bfc74dbbc5dca73810df0589396)
Signed-off-by: Brian Maly <brian.maly@oracle.com>