arm64: versal: Add Xilinx Versal Virtual QEMU board

Virtual QEMU board is generating DTB self and putting it to
VERSAL_QEMU_DTB_ADDR address.
Board is using CONFIG_OF_BOARD which ensures that u-boot is aligned with
board created by QEMU.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/mach-versal/Kconfig b/arch/arm/mach-versal/Kconfig
index 04dbaea..9cee97b 100644
--- a/arch/arm/mach-versal/Kconfig
+++ b/arch/arm/mach-versal/Kconfig
@@ -36,4 +36,9 @@
 config ZYNQ_SDHCI_MAX_FREQ
 	default 200000000
 
+config VERSAL_OF_BOARD_DTB_ADDR
+	hex
+	default 0x1000
+	depends on OF_BOARD
+
 endif