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.
Johnny Lin has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/49460 )

Change subject: cpu/x86/smm: Add log_level that can be overridden for SMM log level
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Patch Set 9:

(3 comments)

File src/cpu/x86/smm/smm_module_loaderv2.c:

https://review.coreboot.org/c/coreboot/+/49460/comment/f251166b_bb504132 
PS4, Line 613: if (CONFIG(CONSOLE_OVERRIDE_LOGLEVEL)) {
> Do you mean always assign it from get_smm_loglevel()? […]

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File src/cpu/x86/smm/smm_module_loaderv2.c:

https://review.coreboot.org/c/coreboot/+/49460/comment/f7d7c85c_0207f852 
PS8, Line 615: 	printk(BIOS_INFO, "SMM console log level: %d\n", handler_mod_params->log_level);
> Oh not exactly, the shipped firmware will be built with DEBUG_SMI=y but SMI log got muted by default […]

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File src/include/cpu/x86/smm.h:

https://review.coreboot.org/c/coreboot/+/49460/comment/dfbac575_57712a64 
PS5, Line 63: #if CONFIG(CONSOLE_OVERRIDE_LOGLEVEL)
> just remove this, then you don't need preprocessor in the code either.

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