greybus: audio: use the bundle struct device instead of the connector

We are removing struct device from the gb_connection structure in the
near future.  The gb_bundle structure's struct device should be used as
a replacement.

This patch moves the audio driver to use the bundle pointer instead of
the connection pointer.
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Reviewed-by: Alex Elder <elder@linaro.org>

drivers/staging/greybus/audio.c

@@ -341,13 +341,14 @@ static int gb_i2s_mgmt_report_event_recv(u8 type, struct gb_operation *op)
 	char *event_name;
 
 	if (type != GB_I2S_MGMT_TYPE_REPORT_EVENT) {
-		dev_err(&connection->dev, "Invalid request type: %d\n",
+		dev_err(&connection->bundle->dev, "Invalid request type: %d\n",
 			type);
 		return -EINVAL;
 	}
 
 	if (op->request->payload_size < sizeof(*req)) {
-		dev_err(&connection->dev, "Short request received (%zu < %zu)\n",
+		dev_err(&connection->bundle->dev,
+			"Short request received (%zu < %zu)\n",
 			op->request->payload_size, sizeof(*req));
 		return -EINVAL;
 	}
@@ -385,12 +386,12 @@ static int gb_i2s_mgmt_report_event_recv(u8 type, struct gb_operation *op)
 		event_name = "DATA_LEN";
 		break;
 	default:
-		dev_warn(&connection->dev, "Unknown I2S Event received: %d\n",
-			 req->event);
+		dev_warn(&connection->bundle->dev,
+			 "Unknown I2S Event received: %d\n", req->event);
 		return -EINVAL;
 	}
 
-	dev_warn(&connection->dev, "I2S Event received: %d - '%s'\n",
+	dev_warn(&connection->bundle->dev, "I2S Event received: %d - '%s'\n",
 		 req->event, event_name);
 
 	return 0;