Add a bunch of missing "zephyr/" prefixes to #include statements in
various test and test framework files.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Note that the it8xxx2 does not support a status register so that
functionality is omitted.
This change also adds driver tests that build both the npcx and it8xxx2
drivers.
Signed-off-by: Yuval Peress <peress@chromium.org>