Most 5784 / 5764 LED modes do not work as expected because of a hardware
bug.  This patch forces the LED mode to be in MAC LED mode.
Signed-off-by: NMatt Carlson <mcarlson@broadcom.com>
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>