This migrates the subsys code samples to the new Sphinx code-sample
extension, making it easier to find relevant samples when browsing
API reference.
Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
This follows the same convention that has already been adopted by Intel
Alder Lake and Raptor Lake boards.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>