regmap: irq: Clarify error message when we fail to request primary IRQ

Display the name for the chip rather than just the primary IRQ so it is
clearer what exactly has failed.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

drivers/base/regmap/regmap-irq.c

@@ -460,7 +460,8 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
 	ret = request_threaded_irq(irq, NULL, regmap_irq_thread, irq_flags,
 				   chip->name, d);
 	if (ret != 0) {
-		dev_err(map->dev, "Failed to request IRQ %d: %d\n", irq, ret);
+		dev_err(map->dev, "Failed to request IRQ %d for %s: %d\n",
+			irq, chip->name, ret);
 		goto err_domain;
 	}