Use gpio_keys driver to add ACPI node for pen eject event.
Also setting gpio wake pin for wake events.
BUG=b:175519097
BRANCH=firmware-volteer-13672.B
TEST=build and verify on a Copano
Change-Id: Id0a132aa398abde4983af123d00e355ac61839a8
Signed-off-by: hao_chou <hao_chou@pegatron.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51249
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Wayne3 Wang <wayne3_wang@pegatron.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
a776ebb801