hwmon: (dell-smm) Add support for Dell OptiPlex 7040

The Dell OptiPlex 7040 supports the legacy SMM interface for reading
sensors and performing fan control. Whitelist this machine so that
this driver loads automatically.

Closes: Wer-Wolf/i8kutils#15
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20250917181036.10972-5-W_Armin@gmx.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Author: Wer-Wolf

drivers/hwmon/dell-smm-hwmon.c

@@ -1330,6 +1330,13 @@ static const struct dmi_system_id i8k_dmi_table[] __initconst = {
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "OptiPlex 7050"),
 		},
 	},
+	{
+		.ident = "Dell OptiPlex 7040",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "OptiPlex 7040"),
+		},
+	},
 	{
 		.ident = "Dell Precision",
 		.matches = {