regulator: core: Change dummy supplies error message to a warning

commit acc3d5ce upstream.

Change "dummy supplies not allowed" error message to warning instead, as this
is a just warning message with no change to the behavior.

[Added a CC to stable since some other bug fixes cause this to come up
more frequently on PCs which is how it was noticed -- broonie]
Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/regulator/core.c

@@ -1360,7 +1360,7 @@ static struct regulator *_regulator_get(struct device *dev, const char *id,
 		rdev = dummy_regulator_rdev;
 		goto found;
 	} else {
-		dev_err(dev, "dummy supplies not allowed\n");
+		dev_warn(dev, "dummy supplies not allowed\n");
 	}
 
 	mutex_unlock(&regulator_list_mutex);