coresight: fix spelling mistake "deffered" -> "deferred"

There is a spelling mistake in the dev_info error message, fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/hwtracing/coresight/coresight-stm.c

@@ -856,7 +856,7 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id)
 
 	if (stm_register_device(dev, &drvdata->stm, THIS_MODULE)) {
 		dev_info(dev,
-			 "stm_register_device failed, probing deffered\n");
+			 "stm_register_device failed, probing deferred\n");
 		return -EPROBE_DEFER;
 	}