[L] Change in coreboot[main]: soc/intel/common/block/imc: add Integrated Memory Controller driver

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Attention is currently required from: Shuo Liu, [e-mail].

Hello Jérémy Compostella, Shuo Liu, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/83320?usp=email

to look at the new patch set (#3).

The following approvals got outdated and were removed: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

Change subject: soc/intel/common/block/imc: add Integrated Memory Controller driver
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soc/intel/common/block/imc: add Integrated Memory Controller driver

This patch wraps the smbus IO calls with weak spd IO functions so that
firmware could use IMC to get SPD data.

Change-Id: I3f47ddeda94d3882852d64c0052f8fb42b6b7ad2
Signed-off-by: Yuchi Chen 
---
M src/include/spd_bin.h
A src/soc/intel/common/block/imc/Kconfig
A src/soc/intel/common/block/imc/Makefile.mk
A src/soc/intel/common/block/imc/imc.c
A src/soc/intel/common/block/imc/spd.c
M src/soc/intel/common/block/include/intelblocks/imc.h
M src/soc/intel/common/block/smbus/smbuslib.c
M src/southbridge/intel/common/smbus.c
8 files changed, 293 insertions(+), 18 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/20/83320/3