regulator: Mention regulator id in error message about dummy supplies

With the name that is currently looked up it is considerably easier to
understand the issue and fix the warning.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20240507104703.2070117-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Uwe Kleine-König

drivers/regulator/core.c

@@ -2195,7 +2195,7 @@ struct regulator *_regulator_get(struct device *dev, const char *id,
 
 		if (!have_full_constraints()) {
 			dev_warn(dev,
-				 "incomplete constraints, dummy supplies not allowed\n");
+				 "incomplete constraints, dummy supplies not allowed (id=%s)\n", id);
 			return ERR_PTR(-ENODEV);
 		}
 
@@ -2213,7 +2213,7 @@ struct regulator *_regulator_get(struct device *dev, const char *id,
 
 		case EXCLUSIVE_GET:
 			dev_warn(dev,
-				 "dummy supplies not allowed for exclusive requests\n");
+				 "dummy supplies not allowed for exclusive requests (id=%s)\n", id);
 			fallthrough;
 
 		default: