glados: Add touchscreen device in ACPI

Add the ELAN touchscreen device in ACPI to bind it to the I2C
device at bus I2C0, address 0x10, interrupt 31 (GPP_E7).

BUG=chrome-os-partner:43514
BRANCH=none
TEST=boot on glados P2 and see touchscreen initialized by kernel

Original-Change-Id: I23b071b2767547baed239c94216cda6162d045dd
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/293512
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>

Change-Id: I8a9492e6fa1f650cef0871329ae8944caffdaf5a
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/11278
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
1 file changed