platform/chrome: chromeos_laptop - Add Toshiba CB35 Touch

Add support for Leon touch devices, which is the same as
falco/peppy/wolf on the same buses using the LynxPoint-LP I2C
via the i2c-designware-pci driver.

Based on these patches from the chromeos-3.8 kernel:
https://chromium-review.googlesource.com/168351
https://chromium-review.googlesource.com/173445

Signed-off-by: Gene Chen <gene.chen@intel.com>
Signed-off-by: Benson Leung <bleung@chromium.org>
Tested-by: Scot Doyle <lkml14@scotdoyle.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

drivers/platform/chrome/chromeos_laptop.c

@@ -394,6 +394,13 @@ static struct chromeos_laptop dell_chromebook_11 = {
 	},
 };
 
+static struct chromeos_laptop toshiba_cb35 = {
+	.i2c_peripherals = {
+		/* Touchpad. */
+		{ .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 },
+	},
+};
+
 static struct chromeos_laptop acer_c7_chromebook = {
 	.i2c_peripherals = {
 		/* Touchpad. */
@@ -475,6 +482,14 @@ static struct dmi_system_id chromeos_laptop_dmi_table[] __initdata = {
 		},
 		_CBDD(hp_chromebook_14),
 	},
+	{
+		.ident = "Toshiba CB35",
+		.matches = {
+			DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Leon"),
+		},
+		_CBDD(toshiba_cb35),
+	},
 	{
 		.ident = "Acer C7 Chromebook",
 		.matches = {