logging: Added support for 10 arguments in log message

Extended supported number of arguments in log message. Support for
messages consisting of more than 2 chunks had to be added. So far
messages could consist of one chunk (up to 3 args) or two chunks
(2 args in first chunk and 7 in second chunk). Once 2+ chunks
support is added number of arguments is techinically limited to
15 (4 bit field). log_core and log_output extended to suppor 10
arguments.

Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
6 files changed