arm: zynq: Moved ethernet PHY configs of Zynq boards to defconfig

This patch moved ethernet PHY configs of Zynq boards
to respective defconfig.

Signed-off-by: Vipul Kumar <vipulk@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/zynq_zc770_xm012_defconfig b/configs/zynq_zc770_xm012_defconfig
index 205d2c5..09ae04b 100644
--- a/configs/zynq_zc770_xm012_defconfig
+++ b/configs/zynq_zc770_xm012_defconfig
@@ -37,5 +37,8 @@
 CONFIG_DM_GPIO=y
 # CONFIG_MMC is not set
 CONFIG_MTD_NOR_FLASH=y
+CONFIG_PHY_MARVELL=y
+CONFIG_PHY_REALTEK=y
+CONFIG_PHY_XILINX=y
 CONFIG_ZYNQ_GEM=y
 CONFIG_ZYNQ_SERIAL=y