dell-laptop: Add another Dell laptop family to the DMI whitelist

This is to support Precision M4500 and others.

Signed-off-by: Rezwanul Kabir <Rezwanul_Kabir@dell.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

drivers/platform/x86/dell-laptop.c

@@ -82,6 +82,12 @@ static const struct dmi_system_id __initdata dell_device_table[] = {
 			DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
 		},
 	},
+	{
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /*Laptop*/
+		},
+	},
 	{
 		.ident = "Dell Computer Corporation",
 		.matches = {
@@ -621,4 +627,5 @@ MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
 MODULE_DESCRIPTION("Dell laptop driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("dmi:*svnDellInc.:*:ct8:*");
+MODULE_ALIAS("dmi:*svnDellInc.:*:ct9:*");
 MODULE_ALIAS("dmi:*svnDellComputerCorporation.:*:ct8:*");