google/reef: Enable touchscreen in ACPI

Add support for ELAN touchscreen on I2C3.

Change-Id: Id8b07a3a3fd4beca0d7ce804ba8d6859275c70d9
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/15499
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
1 file changed