rtc: stop validating rtc_time in .read_time

The RTC core is always calling rtc_valid_tm after the read_time callback.
It is not necessary to call it just before returning from the callback.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
diff --git a/drivers/rtc/rtc-rx8025.c b/drivers/rtc/rtc-rx8025.c
index 91857d8..41127ad 100644
--- a/drivers/rtc/rtc-rx8025.c
+++ b/drivers/rtc/rtc-rx8025.c
@@ -214,7 +214,7 @@ static int rx8025_get_time(struct device *dev, struct rtc_time *dt)
 		dt->tm_sec, dt->tm_min, dt->tm_hour,
 		dt->tm_mday, dt->tm_mon, dt->tm_year);
 
-	return rtc_valid_tm(dt);
+	return 0;
 }
 
 static int rx8025_set_time(struct device *dev, struct rtc_time *dt)