Platform: x86: chromeos_laptop - Add HP Pavilion 14

Add support for the HP Pavilion 14 Chromebook's trackpad, which is a reuse
of the Samsung Series 5 550 trackpad.
Signed-off-by: NBenson Leung <bleung@chromium.org>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

drivers/platform/x86/chromeos_laptop.c

@@ -206,6 +206,13 @@ static struct dmi_system_id __initdata chromeos_laptop_dmi_table[] = {
 		},
 		.callback = setup_cyapa_smbus_tp,
 	},
+	{
+		.ident = "HP Pavilion 14 Chromebook - Touchpad",
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "Butterfly"),
+		},
+		.callback = setup_cyapa_smbus_tp,
+	},
 	{
 		.ident = "Samsung Series 5 - Light Sensor",
 		.matches = {