sysinfo: Provide a default driver to set SMBIOS values

Some boards want to specify the manufacturer or product name but do not
need to have their own sysinfo driver.

Add a default driver which provides a way to specify this SMBIOS
information in the devicetree, without needing any board-specific
functionality.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/sysinfo/Kconfig b/drivers/sysinfo/Kconfig
index 3914150..85c1e81 100644
--- a/drivers/sysinfo/Kconfig
+++ b/drivers/sysinfo/Kconfig
@@ -22,4 +22,12 @@
 	help
 	  Support querying device information for the Sandbox boards.
 
+config SYSINFO_SMBIOS
+	bool "Provide a default sysinfo driver for SMBIOS information"
+	help
+	  Some boards want to specify the manufacturer or product name but do
+	  not need to have their own sysinfo driver. This includes a default
+	  one which provides a way to specify this SMBIOS information in the
+	  devicetree, without needing any board-specific functionality.
+
 endif