Board samples were listed in a very flat way before.
This commit introduces the appropriate toctrees to fix this.
Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
Adds missing code-sample directive to all the 96boards samples in
preparation for upcoming changes to the Zephyr documentation that will
be leveraging the provided description and metadata.
Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
Group all 96boards board samples in samples/boards/96boards to
keep samples/boards/ organized by vendor
Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
