Change in coreboot[master]: console: Create helper function to get max console log level

[Nico Huber (Code Review)]

Attention is currently required from: Subrata Banik, Tim Wawrzynczak, Angel Pons, EricR Lai.
Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/60470 )

Change subject: console: Create helper function to get max console log level
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Patch Set 3:

(1 comment)

File src/console/init.c:

https://review.coreboot.org/c/coreboot/+/60470/comment/85f4770f_d8eb785f 
PS2, Line 55: 		return get_log_level();
> Thanks, will wait for Nico's reply on this thought.

My initial thought was to have a function that complements the existing
console_log_level() function. But exporting get_log_level() works too,
I wouldn't mind.