[L] Change in coreboot[master]: device/dram: add DDR4 MRS commands

[Sergii Dmytruk (Code Review)]

Attention is currently required from: Andrey Petrov, Angel Pons, David Hendricks, Krystian Hebel, Martin L Roth, Matt DeVillier, Michał Żygowski, Paul Menzel, Sergii Dmytruk.

Hello Andrey Petrov, Angel Pons, David Hendricks, Krystian Hebel, Martin L Roth, Matt DeVillier, Michał Żygowski, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/67059?usp=email

to look at the new patch set (#12).

The following approvals got outdated and were removed:
Code-Review+1 by Angel Pons, Code-Review+2 by Martin L Roth, Verified+1 by build bot (Jenkins)

Change subject: device/dram: add DDR4 MRS commands
......................................................................

device/dram: add DDR4 MRS commands

Change-Id: I9d4f048c859bc89897d50a5a07468c3375aa1dcf
Signed-off-by: Krystian Hebel 
Signed-off-by: Sergii Dmytruk 
---
M src/device/dram/ddr4.c
M src/include/device/dram/ddr4.h
2 files changed, 525 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/59/67059/12