net: phy: marvell: Add WAKE_PHY support to WOL event

Add Wake-on-PHY feature support by enabling the Link Up Event.

Signed-off-by: Song Yoong Siang <yoong.siang.song@intel.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>