Change in coreboot[master]: cpu/x86/smm: Add log_level that can be overridden for SMM log level

[Johnny Lin (Code Review)]

Attention is currently required from: Marc Jones, Patrick Rudolph, Jonathan Zhang, Rocky Phagura, Jingle Hsu, Angel Pons, Arthur Heymans, Morgan Jang, Kyösti Mälkki.
Hello build bot (Jenkins), Marc Jones, Patrick Rudolph, Jonathan Zhang, Rocky Phagura, Jingle Hsu, Angel Pons, Arthur Heymans, Morgan Jang,

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

https://review.coreboot.org/c/coreboot/+/49460

to look at the new patch set (#9).

Change subject: cpu/x86/smm: Add log_level that can be overridden for SMM log level
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cpu/x86/smm: Add log_level that can be overridden for SMM log level

When CONSOLE_OVERRIDE_LOGLEVEL is selected, ramstage can pass SMM
console log level via this variable and in SMM it gets assigned to a
global int 'smm_log_level' that can be referenced in SMM
get_console_loglevel() override function directly.

The purpose is that getting the log level may spend too much time
such as searching for the key-value from flash VPD, which is not ideal
for SMM.

Tested=On OCP Delta Lake, verified SMM log level can be overridden.

Change-Id: I81722a4f1bf75ec942cc06e403ad702dfe938e71
Signed-off-by: Johnny Lin 
---
M src/cpu/x86/smm/smm_module_handler.c
M src/cpu/x86/smm/smm_module_loader.c
M src/cpu/x86/smm/smm_module_loaderv2.c
M src/include/console/console.h
M src/include/cpu/x86/smm.h
5 files changed, 28 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/60/49460/9