Change in coreboot[master]: soc/mediatek/mt8186: add pmif driver setting

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Change subject: soc/mediatek/mt8186: add pmif driver setting
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soc/mediatek/mt8186: add pmif driver setting

We encounter a issue of suspend fail, and the root cause is that
the default pmif register setting is not correct for low power
mode. Therefore, we add the correct setting of pmif low power.

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/89/63089/2