drivers: wifi: simplelink: More fixes after logging update

Previously, '\n' in LOG_DBG statements were added to
improve readability, by ensuring IP address weren't printed
across typical console terminal line boundaries.

But with the logging updates, '\n' is no longer
getting automatically expanded to \r\n, and a new timestamp
is automatically added, throwing off attempts at alignment.

This patch finally just removes the '\n''s from the log messages,
and cuts a few longer messages into separate messages.

Signed-off-by: Gil Pitney <gil.pitney@linaro.org>