UPSTREAM: phy: phy_{read|write}_mmd_indirect: get addr from phydev

UPSTREAM: phy: phy_{read|write}_mmd_indirect: get addr from phydev

The address of the device can be determined from the phydev structure,
rather than passing it as a parameter.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 053e7e169229adebbc27fc176c5369398e9f5eba)
Change-Id: Ib0f855bb2f6ad38e37c030343d6ccb1cc8848178
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>