[coreboot-gerrit] Change in coreboot[master]: console: Allow configuring log level through CBFS

[Patrick Georgi (Code Review)]

Attention is currently required from: Marc Jones, Nico Huber, Julius Werner, Patrick Rudolph.
Patrick Georgi has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/45208 )

Change subject: console: Allow configuring log level through CBFS
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Patch Set 17:

(3 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/45208/comment/e64fc822_55dc7254 
PS4, Line 18: entry is added.
> Yes, the VPD solution may be less bad on x86. […]

I'll leave the eierlegende Wollmilchsau (https://de.wikipedia.org/wiki/Eierlegende_Wollmilchsau) - in this case, a generic binary configuration mechanism that works in low-SRAM pre-ram environments with hard to access SPI storage - for somebody else to implement.

File src/console/Kconfig:

https://review.coreboot.org/c/coreboot/+/45208/comment/6b64977f_c7aa2e9f 
PS12, Line 71: SLOW_CONSOLE_LOGLEVEL_7
> https://review.coreboot. […]

Following Julius' feedback the separate slow console option has been removed entirely

File src/console/Kconfig:

https://review.coreboot.org/c/coreboot/+/45208/comment/64362faa_42532b59 
PS14, Line 43: config OPTIONAL_SLOW_CONSOLE
> nit: In line with the suggestion of merging all this into the "main" loglevel, I'd consider just ren […]

I dislike options so now that we cut down on the code, I made it a default behavior.