Change in coreboot[master]: soc/mediatek/mt8186: Fix pmif setting for low power mode

[Rex-BC Chen (Code Review)]

Attention is currently required from: Hung-Te Lin, Rex-BC Chen.
Hello Hung-Te Lin, build bot (Jenkins), Yu-Ping Wu,

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

https://review.coreboot.org/c/coreboot/+/63089

to look at the new patch set (#3).

Change subject: soc/mediatek/mt8186: Fix pmif setting for low power mode
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soc/mediatek/mt8186: Fix pmif setting for low power mode

The current pmif register setting for low power mode is incorrect,
which is causing suspend failure. Therefore, add
pmif_spmi_set_lp_mode() to correct the setting.

This implementation is based on chapter 3.7 in MT8186 Functional
Specification.

BUG=b:215639203
TEST=test of suspend and resume pass.

Signed-off-by: Zhiyong Tao 
Change-Id: I2d02198f19f9cb052fba612c02404a6af1a10adb
---
M src/soc/mediatek/mt8186/Makefile.inc
M src/soc/mediatek/mt8186/include/soc/addressmap.h
A src/soc/mediatek/mt8186/include/soc/pmif.h
M src/soc/mediatek/mt8186/mt6366.c
A src/soc/mediatek/mt8186/pmif.c
5 files changed, 42 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/89/63089/3