rtc: hym8563: fix the incorrect initialization

The **valid** is always false in __probe__ function, so that the time
will be invalid at the first time.

Fixes: 66af994 ("rtc: hym8563: add initialization data")
Change-Id: Id7a245159ab0fc4e9980db5e538b05ff17a02d89
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>

Author: Ziyuan Xu

drivers/rtc/rtc-hym8563.c

@@ -548,6 +548,7 @@ static int hym8563_probe(struct i2c_client *client,
 		return -ENOMEM;
 
 	hym8563->client = client;
+	hym8563->valid = true;
 	i2c_set_clientdata(client, hym8563);
 
 	device_set_wakeup_capable(&client->dev, true);