net: Use the existing logging option in Kconfig for debugging

Instead of new config option for debugging, lets re-use the
existing logging option CONFIG_NETWORKING_WITH_LOGGING that
is found in Kconfig. Unselecting that option will turn off
the debug messages in IP stack.

Change-Id: I4c1e0e91f3959304b7dc2b62d2bf73ec87cd1114
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
5 files changed