ARM: zynq: rename CONFIG_ZYNQ to CONFIG_ARCH_ZYNQ

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/zynq_picozed_defconfig b/configs/zynq_picozed_defconfig
index b782873..61852cb 100644
--- a/configs/zynq_picozed_defconfig
+++ b/configs/zynq_picozed_defconfig
@@ -1,6 +1,6 @@
 CONFIG_SPL=y
 CONFIG_ARM=y
-CONFIG_ZYNQ=y
+CONFIG_ARCH_ZYNQ=y
 CONFIG_TARGET_ZYNQ_PICOZED=y
 CONFIG_OF_CONTROL=n
 CONFIG_DEFAULT_DEVICE_TREE="zynq-picozed"