drivers: net: davinci_mdio: moving mdio resume earlier than cpsw ethernet driver

MDIO driver should resume before CPSW ethernet driver so that CPSW connect
to the phy and start tx/rx ethernet packets, changing the suspend/resume
apis with suspend_late/resume_early.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>