Added more detailed information how to connect Zephyr instance
to host system like Linux desktop.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Be consistent in how board docs are named and move all to index.rst.
This will make the URL to the board documentation predictable and easier
to remember.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>