arm64: mvebu: Use devicetree for SMBIOS settings on uDPU

Add settings and enable the default sysinfo driver so that these can come
from the device tree.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/arm/dts/armada-3720-uDPU-u-boot.dtsi b/arch/arm/dts/armada-3720-uDPU-u-boot.dtsi
index ef178bd..fdad90a 100644
--- a/arch/arm/dts/armada-3720-uDPU-u-boot.dtsi
+++ b/arch/arm/dts/armada-3720-uDPU-u-boot.dtsi
@@ -1,5 +1,25 @@
 // SPDX-License-Identifier: GPL-2.0+
 
+/ {
+	smbios {
+		compatible = "u-boot,sysinfo-smbios";
+
+		smbios {
+			system {
+				product = "uDPU";
+			};
+
+			baseboard {
+				product = "uDPU";
+			};
+
+			chassis {
+				product = "uDPU";
+			};
+		};
+	};
+};
+
 &spi0 {
 	u-boot,dm-pre-reloc;