trig-timer: squash a warning

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Federico Vaga <federico.vaga@gmail.com>

triggers/zio-trig-timer.c

@@ -58,7 +58,7 @@ int ztt_conf_set(struct kobject *kobj, struct zio_attribute *zattr,
 		ztt->period = msecs_to_jiffies(usr_val);
 		break;
 	default:
-		pr_err("%s: unknown \"addr\" 0x%x for configuration\n",
+		pr_err("%s: unknown \"addr\" 0x%lx for configuration\n",
 				__func__, zattr->priv.addr);
 		return -EINVAL;
 	}