audio: fix AMS callback signature in detect_test and wov_arbiter

The ams_msg_callback_fn type is:
  void (*)(const struct ams_message_payload *const, void *)

The on_wov_ctrl() and arb_on_detect() callbacks were written with the
old four-argument form (msg_type_id, message, message_size, ctx) which
no longer matches the typedef, causing build failures on mtl/tgl/lnl.

Also fix the payload field access inside those callbacks:
  p->payload_size → p->message_length
  p->payload      → p->message

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: lrgirdwo

src/audio/wov_arbiter/wov_arbiter.c

@@ -92,21 +92,16 @@ static void arb_send_ctrl(const struct comp_dev *dev, uint8_t cmd,
 }
 
 /* AMS callback: a WOV detector has fired. */
-static void arb_on_detect(const uint32_t msg_type_id,
-			   const void *message,
-			   const uint32_t message_size,
-			   void *ctx)
+static void arb_on_detect(const struct ams_message_payload *const p, void *ctx)
 {
 	struct comp_dev *dev = ctx;
 	struct wov_arb_data *cd = comp_get_drvdata(dev);
-	const struct ams_message_payload *p = message;
 
-	if (message_size < sizeof(*p) ||
-	    p->payload_size < sizeof(struct wov_detect_payload))
+	if (p->message_length < sizeof(struct wov_detect_payload))
 		return;
 
 	const struct wov_detect_payload *det =
-		(const struct wov_detect_payload *)p->payload;
+		(const struct wov_detect_payload *)p->message;
 
 	if (det->slot_id >= WOV_ARB_MAX_SLOTS) {
 		comp_err(dev, "wov_arb: bad slot_id %u", det->slot_id);

src/samples/audio/detect_test.c

@@ -207,21 +207,16 @@ static void ams_notify_arb(const struct comp_dev *dev)
 }
 
 /* AMS callback: arbiter is broadcasting a PAUSE or RESUME command. */
-static void on_wov_ctrl(const uint32_t msg_type_id,
-			const void *message,
-			const uint32_t message_size,
-			void *ctx)
+static void on_wov_ctrl(const struct ams_message_payload *const p, void *ctx)
 {
 	struct comp_dev *dev = ctx;
 	struct comp_data *cd = comp_get_drvdata(dev);
-	const struct ams_message_payload *p = message;
 
-	if (message_size < sizeof(*p) ||
-	    p->payload_size < sizeof(struct wov_ctrl_payload))
+	if (p->message_length < sizeof(struct wov_ctrl_payload))
 		return;
 
 	const struct wov_ctrl_payload *ctrl =
-		(const struct wov_ctrl_payload *)p->payload;
+		(const struct wov_ctrl_payload *)p->message;
 
 	if (ctrl->cmd == WOV_CTRL_CMD_PAUSE) {
 		if (cd->wov_slot_id != ctrl->active_slot) {