ixgbe: Fix for RAR0 not being set to default MAC addr

ixgbe: Fix for RAR0 not being set to default MAC addr

Orabug: 23177316

commit c9f53e63c208 ("ixgbe: Refactor MAC address configuration code")
introduced code that doesn't set HW register RAR0 to default mac address
but FF:FF:FF:FF:FF:FF. Due to this, ixgbe HW discards all incoming packets
that doesn't have destination mac address equals to FF:FF:FF:FF:FF:FF.

This commit sets RAR0 correctly to default HW mac address.

Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Tested-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 56768045186c183f1d6e5cd916dd07751a777a8d)
Signed-off-by: Brian Maly <brian.maly@oracle.com>