Change in coreboot[master]: mediatek/mt8183: Add DDR driver of cmd bus training part

[Tristan Hsieh (Code Review)]

Hello build bot (Jenkins),

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

https://review.coreboot.org/28839

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

Change subject: mediatek/mt8183: Add DDR driver of cmd bus training part
......................................................................

mediatek/mt8183: Add DDR driver of cmd bus training part

BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Kukui, and inits DRAM successfully with related
     patches.

Change-Id: Icb281f1b23c637971497eb28ed428235adf42f2d
Signed-off-by: Huayang Duan 
---
M src/soc/mediatek/mt8183/dramc_pi_calibration_api.c
M src/soc/mediatek/mt8183/emi.c
M src/soc/mediatek/mt8183/include/soc/dramc_pi_api.h
3 files changed, 95 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/39/28839/2