shell: Add initial log level for rtt and uart backends

[nordic-krch]

RTT and uart shell backends were started with fixed
log limit set to INF. Configuration has been moved
to Kconfig allowing certain level or default LOG_MAX_LEVEL.

Fixes #11417.

Signed-off-by: Krzysztof Chruscinski [email protected]

[codecov-io]

Codecov Report

Merging #11434 into master will decrease coverage by 0.08%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #11434      +/-   ##
==========================================
- Coverage   48.38%   48.29%   -0.09%     
==========================================
  Files         265      265              
  Lines       42193    42180      -13     
  Branches    10137    10136       -1     
==========================================
- Hits        20413    20371      -42     
- Misses      17703    17728      +25     
- Partials     4077     4081       +4

Impacted Files	Coverage Δ
subsys/logging/log_output.c	63.59% <0%> (-8.74%)	⬇️
subsys/logging/log_core.c	71.1% <0%> (-3.47%)	⬇️
misc/printk.c	85.45% <0%> (-3.1%)	⬇️
include/logging/log_msg.h	89.09% <0%> (-1.82%)	⬇️
include/logging/log_core.h	100% <0%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 644b31d...492a49e. Read the comment docs.

[pfalcon]

Confirmed this fixes #11417, why not list it as "Fixes:" in the commit message?

And I tried to dig into fixing that myself, couldn't find much except workaround of CONFIG_LOG_RUNTIME_FILTERING=n (which is not so easy to apply), and wouldn't imagine it has something to do with logging backends...

[pfalcon]

Fixes #11417 which blocks networking debugging.

[pfalcon]

There's a bunch of checkpatch errors, should be easy to fix.

Thanks for quick fix btw!

[pfalcon]

Here's for example trailing whitespace (on otherwise empty line) about which checkpatch complains (and on bunch of other lines too).

[jakub-uC]

@carlescufi : May you please merge this fix?