rtc: pcf85063: 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 before returning from the callback.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-pcf85063.c

@@ -114,7 +114,7 @@ static int pcf85063_get_datetime(struct i2c_client *client, struct rtc_time *tm)
 	tm->tm_year = bcd2bin(regs[6]);
 	tm->tm_year += 100;
 
-	return rtc_valid_tm(tm);
+	return 0;
 }
 
 static int pcf85063_set_datetime(struct i2c_client *client, struct rtc_time *tm)