This feature adds support for using a custom function to format
the timestamp used for all logging backends. When the kconfig
option LOG_OUTPUT_FORMAT_CUSTOM_TIMESTAMP is set the custom
formatting function will always be used.
Signed-off-by: Hein Wessels <heinwessels93@gmail.com>
To enable custom formatting of the log output while still using existing
backend, this commit adds the `log_output_custom` feature.
To use, register a commit with `log_custom_output_msg_set` then set the
log backend format set using `log_backend_format_set` with
`LOG_OUTPUT_CUSTOM`
Signed-off-by: Lucas Denefle <lucas.denefle@converge.io>