[media] v4l2-subdev: add start/end messages for log_status

Add the start and end messages for log_status when called from a
subdev device node.

Signed-off-by: Hans Verkuil <[e-mail]>
Cc: Laurent Pinchart <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/video/v4l2-subdev.c

···
 	}
 #endif
 
-	case VIDIOC_LOG_STATUS:
-		return v4l2_subdev_call(sd, core, log_status);
+	case VIDIOC_LOG_STATUS: {
+		int ret;
+
+		pr_info("%s: =================  START STATUS  =================\n",
+			sd->name);
+		ret = v4l2_subdev_call(sd, core, log_status);
+		pr_info("%s: ==================  END STATUS  ==================\n",
+			sd->name);
+		return ret;
+	}
 
 #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
 	case VIDIOC_SUBDEV_G_FMT: {