drivers: i3c: npcx: add api call for default handler

add api calls for the default handlers for i3c rtio

(cherry picked from commit 622732e)

Original-Signed-off-by: Ryan McClelland <ryanmcclelland@meta.com>
GitOrigin-RevId: 622732e
Cr-Build-Id: 8728310571250663457
Cr-Build-Url: https://cr-buildbucket.appspot.com/build/8728310571250663457
Copybot-Job-Name: zephyr-main-copybot-downstream
Change-Id: Ie0cababc75ef1856f22c46f20f6241537b34d1f9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/6101980
Commit-Queue: Dawid Niedźwiecki <dawidn@google.com>
Tested-by: Dawid Niedźwiecki <dawidn@google.com>
Reviewed-by: Dawid Niedźwiecki <dawidn@google.com>
Tested-by: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>

drivers/i3c/i3c_npcx.c

@@ -2986,6 +2986,10 @@ static DEVICE_API(i3c, npcx_i3c_driver_api) = {
 
 	.ibi_raise = npcx_i3c_target_ibi_raise,
 #endif
+
+#ifdef CONFIG_I3C_RTIO
+	.iodev_submit = i3c_iodev_submit_fallback,
+#endif
 };
 
 #define DT_INST_TGT_PID_PROP_OR(id, prop, idx)                                                     \