xilinx: Enable SPI driver for Versal

Enable Zynq SPI driver for Versal.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/xilinx_versal_virt_defconfig b/configs/xilinx_versal_virt_defconfig
index 40a8cfd..7291c51 100644
--- a/configs/xilinx_versal_virt_defconfig
+++ b/configs/xilinx_versal_virt_defconfig
@@ -86,6 +86,7 @@
 CONFIG_XILINX_UARTLITE=y
 CONFIG_SPI=y
 CONFIG_DM_SPI=y
+CONFIG_ZYNQ_SPI=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
 CONFIG_DM_USB_GADGET=y