hw/arm: XLNX_VERSAL depends on XLNX_CSU_DMA

Fixes: 868d968004 ("hw/arm/xlnx-versal: Connect OSPI flash controller")
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>

hw/arm/Kconfig

@@ -484,6 +484,7 @@ config XLNX_VERSAL
     select XLNX_EFUSE_VERSAL
     select XLNX_USB_SUBSYS
     select XLNX_VERSAL_TRNG
+    select XLNX_CSU_DMA
 
 config NPCM7XX
     bool