defconfig: Add CONFIG_OF_CONTROL in zynq_picozed

Enable FDT support for zynq_picozed board.

Signed-off-by: Jagan Teki <jteki@openedev.com>
diff --git a/configs/zynq_picozed_defconfig b/configs/zynq_picozed_defconfig
index af77a9d..76a76e0 100644
--- a/configs/zynq_picozed_defconfig
+++ b/configs/zynq_picozed_defconfig
@@ -6,3 +6,4 @@
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_OF_CONTROL=y