Change in coreboot[master]: soc/mediatek/mt8195: add mt6691 driver

[Rex-BC Chen (Code Review)]

Attention is currently required from: Hung-Te Lin.
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/+/55575

to look at the new patch set (#4).

Change subject: soc/mediatek/mt8195: add mt6691 driver
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soc/mediatek/mt8195: add mt6691 driver

Add mt6691 buck control for DRAM to run fast calibration test.
It is needed to get and set voltage during testing.

Signed-off-by: Henry Chen 
Change-Id: I4fb9f7245d44383a6a3a0cf8d00f7f503cbdeb06
---
M src/soc/mediatek/mt8195/Makefile.inc
A src/soc/mediatek/mt8195/include/soc/mt6691.h
A src/soc/mediatek/mt8195/mt6691.c
3 files changed, 112 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/75/55575/4