powerpc/config: Remove unnecssary CONFIG_FSL_IFC

CONFIG_FSL_IFC gets enabled by Kconfig dependancies.
So remove unnecssary define from the defconfigs

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>

diff --cc arch/powerpc/configs/corenet64_smp_defconfig
Simple merge

diff --cc arch/powerpc/configs/mpc85xx_defconfig
Simple merge

diff --cc arch/powerpc/configs/mpc85xx_smp_defconfig
Simple merge