Add gpio-keys codes for all boards. These are mostly INPUT_KEY_0 and so
on but I've used some more specific ones where it was obvious that
there's something else on the boards.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
The system still takes both prefixed and unprefixed dt-bindings files,
but let's use zephyr/ prefixed in the examples and documentation.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Add an initial board overlay in the input_dump directory for testing
zephyr,gpio-keys. This takes the exsiting "gpio-keys" node, changes the
compatible to the one used by the gpio keys input driver and set some
codes.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
