Change in coreboot[master]: console: Add loglevel prefix to interactive consoles

[Julius Werner (Code Review)]

Attention is currently required from: Nico Huber, Patrick Georgi, Julius Werner, Kyösti Mälkki.
Hello build bot (Jenkins), Raul Rangel, Nico Huber, Patrick Georgi, Kyösti Mälkki,

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

https://review.coreboot.org/c/coreboot/+/61306

to look at the new patch set (#5).

Change subject: console: Add loglevel prefix to interactive consoles
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console: Add loglevel prefix to interactive consoles

In an attempt to make loglevels more visible (and therefore useful,
hopefully), this patch adds a prefix indicating the log level to every
line sent to an "interactive" console (such as a UART). If the code
contains a `printk(BIOS_DEBUG, "This is a debug message!\n"), it will
now show up as

[DEBUG]  This is a debug message!

on the UART output.

"Stored" consoles (such as in CBMEM) will get a similar but more
space-efficient feature in a later CL.

Signed-off-by: Julius Werner 
Change-Id: Ic83413475400821f8097ef1819a293ee8926bb0b
---
M src/commonlib/include/commonlib/loglevel.h
M src/console/console.c
M src/console/printk.c
M src/include/console/streams.h
4 files changed, 70 insertions(+), 9 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/06/61306/5