powerpc/83xx: Enable FIXED_PHY in mpc834x_itx and mpc83xx defconfigs

This is needed so that Vitesse 7385 5-port switch could work on
MPC8349E-mITX boards.
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: NTimur Tabi <timur@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

arch/powerpc/configs/83xx/mpc834x_itx_defconfig

@@ -723,7 +723,7 @@ CONFIG_CICADA_PHY=y
 # CONFIG_BROADCOM_PHY is not set
 # CONFIG_ICPLUS_PHY is not set
 # CONFIG_REALTEK_PHY is not set
-# CONFIG_FIXED_PHY is not set
+CONFIG_FIXED_PHY=y
 # CONFIG_MDIO_BITBANG is not set
 # CONFIG_NET_ETHERNET is not set
 CONFIG_NETDEV_1000=y

arch/powerpc/configs/mpc83xx_defconfig

@@ -682,7 +682,7 @@ CONFIG_VITESSE_PHY=y
 # CONFIG_BROADCOM_PHY is not set
 CONFIG_ICPLUS_PHY=y
 # CONFIG_REALTEK_PHY is not set
-# CONFIG_FIXED_PHY is not set
+CONFIG_FIXED_PHY=y
 # CONFIG_MDIO_BITBANG is not set
 CONFIG_NET_ETHERNET=y
 CONFIG_MII=y