Include more doxygen info, flag undocumented material, update
.known_issues matching for known doxygen/sphinx issues
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
make the doc build process quiet and add filtering of known (Sphinx)
issues. Scripting comes from the open source Zephyr project.
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>