xilinx: Enable SMBIOS command

It is good to be aware what information is shared via smbios interface
that's why enable it by default.

Signed-off-by: Michal Simek <michal.simek@amd.com>
diff --git a/configs/xilinx_zynqmp_virt_defconfig b/configs/xilinx_zynqmp_virt_defconfig
index a9e6503..fa912ae 100644
--- a/configs/xilinx_zynqmp_virt_defconfig
+++ b/configs/xilinx_zynqmp_virt_defconfig
@@ -52,6 +52,7 @@
 CONFIG_SYS_SPI_U_BOOT_OFFS=0x100000
 CONFIG_SPL_ATF=y
 CONFIG_SPL_ATF_NO_PLATFORM_PARAM=y
+CONFIG_CMD_SMBIOS=y
 CONFIG_CMD_BOOTMENU=y
 CONFIG_CMD_THOR_DOWNLOAD=y
 CONFIG_THOR_RESET_OFF=y