powerpc/85xx: enable teranetics PHY

The PHY uses XAUI interface to connect to MAC, mostly the PHY used on
riser card.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>

arch/powerpc/configs/85xx-hw.config

@@ -125,6 +125,7 @@ CONFIG_SPI_FSL_ESPI=y
 CONFIG_SPI_FSL_SPI=y
 CONFIG_SPI_GPIO=y
 CONFIG_SPI=y
+CONFIG_TERANETICS_PHY=y
 CONFIG_UCC_GETH=y
 CONFIG_USB_EHCI_FSL=y
 CONFIG_USB_EHCI_HCD=y