rtc: rx8111: demote warnings to debug level

The proper way for userspace to react on a read time error is to have a
look at the voltage low information. There is no point in cluttering dmesg
as it is often not even visible to the end user.
Reviewed-by: Waqar Hameed <waqar.hameed@axis.com>
Link: https://lore.kernel.org/r/20240417191937.33790-1-alexandre.belloni@bootlin.comSigned-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-rx8111.c

@@ -170,13 +170,13 @@ static int rx8111_read_time(struct device *dev, struct rtc_time *tm)
 	}
 
 	if (FIELD_GET(RX8111_FLAG_XST_BIT, regval)) {
-		dev_warn(data->dev,
+		dev_dbg(data->dev,
 			"Crystal oscillation stopped, time is not reliable\n");
 		return -EINVAL;
 	}
 
 	if (FIELD_GET(RX8111_FLAG_VLF_BIT, regval)) {
-		dev_warn(data->dev,
+		dev_dbg(data->dev,
 			"Low voltage detected, time is not reliable\n");
 		return -EINVAL;
 	}
@@ -188,7 +188,7 @@ static int rx8111_read_time(struct device *dev, struct rtc_time *tm)
 	}
 
 	if (regval) {
-		dev_warn(data->dev, "Clock stopped, time is not reliable\n");
+		dev_dbg(data->dev, "Clock stopped, time is not reliable\n");
 		return -EINVAL;
 	}