arm64: zynqmp: Enable Fixed link support

This patch enables the fixed link support for
all ZynqMP boards.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/xilinx_zynqmp_zcu102_revB_defconfig b/configs/xilinx_zynqmp_zcu102_revB_defconfig
index 8059255..17a5986 100644
--- a/configs/xilinx_zynqmp_zcu102_revB_defconfig
+++ b/configs/xilinx_zynqmp_zcu102_revB_defconfig
@@ -77,6 +77,7 @@
 CONFIG_PHY_REALTEK=y
 CONFIG_PHY_TI=y
 CONFIG_PHY_VITESSE=y
+CONFIG_PHY_FIXED=y
 CONFIG_DM_ETH=y
 CONFIG_PHY_GIGE=y
 CONFIG_ZYNQ_GEM=y