Update cros_ec_commands.h to include definitions for getting PWM fan duty, getting and setting the fan control mode. Signed-off-by: Sung-Chi Li <lschyi@chromium.org> Acked-by: Tzung-Bi Shih <tzungbi@kernel.org> Reviewed-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20250911-cros_ec_fan-v6-1-a1446cc098af@google.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>