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: Benson Leung <bleung@chromium.org>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
diff --git a/drivers/platform/x86/chromeos_laptop.c b/drivers/platform/x86/chromeos_laptop.c
index 95bf94f..bc6599c 100644
--- a/drivers/platform/x86/chromeos_laptop.c
+++ b/drivers/platform/x86/chromeos_laptop.c
@@ -207,6 +207,13 @@
 		.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 = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "Alex"),