smsc95xx: remove redundant function arguments

[ Upstream commit 368be1ca ]

This patch removes arguments netdev and phy_id from the functions
smsc95xx_mdio_read_nopm and smsc95xx_mdio_write_nopm.  Both removed
arguments are recovered from a new argument `struct usbnet *dev`.

Signed-off-by: Andre Edich <andre.edich@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 52a2f060 ("net: usb: smsc95xx: fix changing LED_SEL bit value updated from EEPROM")
Signed-off-by: Sasha Levin <sashal@kernel.org>