subsys: fs: nvs: Migrate to new logging subsys

[Olivier-ProGlove]

Migrate from SYS_LOG to LOG logging mechanism.

Signed-off-by: Olivier Martin [email protected]

[codecov-io]

Codecov Report

Merging #9360 into master will increase coverage by 1.12%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #9360      +/-   ##
==========================================
+ Coverage   52.53%   53.66%   +1.12%     
==========================================
  Files         212      216       +4     
  Lines       25821    33720    +7899     
  Branches     5428     7942    +2514     
==========================================
+ Hits        13565    18095    +4530     
- Misses      10071    12869    +2798     
- Partials     2185     2756     +571

Impacted Files	Coverage Δ
lib/posix/clock.c	78.57% <0%> (-21.43%)	⬇️
subsys/net/lib/coap/coap_link_format.c	14.74% <0%> (-2.07%)	⬇️
subsys/net/ip/tcp_internal.h	48.27% <0%> (-1.73%)	⬇️
include/net/net_pkt.h	84.14% <0%> (-1.51%)	⬇️
include/misc/stack.h	90.9% <0%> (-1.4%)	⬇️
lib/mempool/mempool.c	95.07% <0%> (-0.55%)	⬇️
include/logging/log_msg.h	81.45% <0%> (-0.37%)	⬇️
subsys/net/ip/icmpv4.c	38.09% <0%> (-0.26%)	⬇️
subsys/net/l2/ethernet/arp.c	53.87% <0%> (-0.19%)	⬇️
include/kernel.h	98.38% <0%> (-0.06%)	⬇️
... and 62 more

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[nordic-krch]

i would move this block to nvs.c next to module registration.
Add:
#define LOG_LEVEL CONFIG_NVS_LOG_LEVEL
To get logging configuration from kconfig.

[nvlsianpu]

@Olivier-ProGlove Thanks for this effort!
@nordic-krch, @carlescufi Is it possible that we first merge #8141 and then replay this PR o that?

[nvlsianpu]

@Olivier-ProGlove Can you rework this PR as PR #8141 was merged. I belief that now the mainline code is almost there.

[Olivier-ProGlove]

@nvlsianpu Pull-request rebased
@nordic-krch Comment taken in account

[nordic-krch]

this include can also be moved to nvs.c. Note that LOG_MODULE_NAME and LOG_LEVEL definition can be provided after log.h include.

[nashif]

addressed in #10029