[L] Change in coreboot[main]: drivers/ipmi: add Block Transfer (BT) interface

[Sergii Dmytruk (Code Review)]

Attention is currently required from: Christian Walter, Jonathan Zhang, Krystian Hebel, Martin L Roth, Martin Roth, Michał Żygowski, Sergii Dmytruk.

Hello Christian Walter, Felix Held, Jonathan Zhang, Krystian Hebel, Martin L Roth, Martin Roth, Michał Żygowski, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/67057?usp=email

to look at the new patch set (#23).

The following approvals got outdated and were removed: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

Change subject: drivers/ipmi: add Block Transfer (BT) interface
......................................................................

drivers/ipmi: add Block Transfer (BT) interface

Unlike already implemented Keyboard Controller Style (KCS) interface
Block Transfer interface is not byte-oriented and implies that device is
capable of buffering command before processing it.  Another difference
is that polling can be replaced with interrupts, though not used by this
implementation.

Change-Id: Idb67972d1c38bbae04c7b4de3405350c229a05b9
Signed-off-by: Sergii Dmytruk 
---
M Documentation/drivers/index.md
A Documentation/drivers/ipmi_bt.md
M src/drivers/ipmi/Kconfig
M src/drivers/ipmi/Makefile.mk
A src/drivers/ipmi/ipmi_bt.c
A src/drivers/ipmi/ipmi_bt.h
A src/drivers/ipmi/ipmi_bt_ops.c
M src/drivers/ipmi/ipmi_ops_premem.c
8 files changed, 404 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/57/67057/23