powerpc/t4240qds: fix PHY reset timeout issue

QSGMII card has different PHY address against previous SGMII card.
We check the type of card in slots and set correct PHY address to
avoid complainning "PHY reset timed out" during u-boot booting up.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>