platform/x86: dell-laptop: Add Latitude 7480 and others to the DMI whitelist

This is to support Latitude 7480 and many other newer Dell laptops.
Signed-off-by: NAlex Hung <alex.hung@canonical.com>
Reviewed-by: NPali Rohár <pali.rohar@gmail.com>
Signed-off-by: NDarren Hart <dvhart@linux.intel.com>

drivers/platform/x86/dell-laptop.c

@@ -105,6 +105,12 @@ static const struct dmi_system_id dell_device_table[] __initconst = {
 			DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /*Laptop*/
 		},
 	},
+	{
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /*Notebook*/
+		},
+	},
 	{
 		.ident = "Dell Computer Corporation",
 		.matches = {