Change in coreboot[master]: soc/mediatek/mt8186: Enable and initialize EINT

[Rex-BC Chen (Code Review)]

Attention is currently required from: Hung-Te Lin.
Hello Hung-Te Lin, build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/58938

to look at the new patch set (#2).

Change subject: soc/mediatek/mt8186: Enable and initialize EINT
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soc/mediatek/mt8186: Enable and initialize EINT

EINT event mask register is used to mask EINT wakeup source.
All wakeup sources are masked by default. Since most MediaTek SoCs do
not have this design, we can't modify the kernel EINT upstream driver to
solve the issue 'Can't wake using power button (cros_ec) or touchpad'.
So we add a driver here to unmask all wakeup sources.

TEST=build pass
BUG=b:202871018

Signed-off-by: Rex-BC Chen 
Change-Id: I84946c2c74dd233419cb94f013a42c734363baf7
---
M src/soc/mediatek/mt8186/Makefile.inc
M src/soc/mediatek/mt8186/bootblock.c
2 files changed, 3 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/38/58938/2