[L] Change in coreboot[master]: haswell NRI: Add pre-training steps

[Bill XIE (Code Review)]

Hello build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/77056?usp=email

to look at the new patch set (#5).

The following approvals got outdated and were removed:
Verified+1 by build bot (Jenkins)

Change subject: haswell NRI: Add pre-training steps
......................................................................

haswell NRI: Add pre-training steps

Implement pre-training steps, which consist of enabling ECC I/O and
filling the WDB (Write Data Buffer, stores test patterns) through a
magic LDAT port.

Original-Change-Id: Ie2e09e3b218c4569ed8de5c5e1b05d491032e0f1
Original-Signed-off-by: Angel Pons 
Signed-off-by: Bill XIE 
Change-Id: I9694a3d5ab7f7bb48331172c7a68e36b6cf165e3
---
M src/northbridge/intel/haswell/native_raminit/Makefile.inc
M src/northbridge/intel/haswell/native_raminit/raminit_main.c
M src/northbridge/intel/haswell/native_raminit/raminit_native.h
M src/northbridge/intel/haswell/native_raminit/reg_structs.h
M src/northbridge/intel/haswell/native_raminit/reut.c
A src/northbridge/intel/haswell/native_raminit/setup_wdb.c
M src/northbridge/intel/haswell/registers/mchbar.h
7 files changed, 278 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/56/77056/5