[coreboot-gerrit] Change in coreboot[master]: mb/ocp/deltalake: Add ipmi POST start command in romstage

[Tim Chu (Code Review)]

Hello Philipp Deppenwiese, build bot (Jenkins), Patrick Georgi, Martin Roth, Jonathan Zhang, Ryback Hung, Johnny Lin, Christian Walter, Paul Menzel, Rocky Phagura, Bryant Ou, Patrick Rudolph,

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

https://review.coreboot.org/c/coreboot/+/41605

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

Change subject: mb/ocp/deltalake: Add ipmi POST start command in romstage
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mb/ocp/deltalake: Add ipmi POST start command in romstage

Add function to send POST start command to BMC. This function is
used in romstage and the POST end command will be sent in u-root.

TEST=Read POST command log in OpenBMC,
if command received successfully, message may show as below,

root@bmc-oob:~# cat /var/log/messages |grep -i "POST"
 2020 Jul 15 16:36:11 bmc-oob. user.info fby3-v2020.23.1:
ipmid: POST Start Event for Payload#2
root@bmc-oob:~#

Signed-off-by: TimChu 
Change-Id: Ide0e2a52876db555ed8b5e919215e85731fd80ed
---
M src/mainboard/ocp/deltalake/ipmi.c
M src/mainboard/ocp/deltalake/ipmi.h
M src/mainboard/ocp/deltalake/romstage.c
3 files changed, 28 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/05/41605/5