rtc: pcf8563: add haoyu,hym8563 compatible

The HYM8563 is a PCF8563 clone with an identical timekeeping register
layout and is found e.g. on the Radxa ROCK 5B. Match its compatible so
DM_RTC (and with it the EFI GetTime/SetTime runtime services) can use
the existing driver with upstream DT.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

drivers/rtc/pcf8563.c

@@ -213,6 +213,7 @@ static const struct rtc_ops pcf8563_rtc_ops = {
 
 static const struct udevice_id pcf8563_rtc_ids[] = {
 	{ .compatible = "nxp,pcf8563" },
+	{ .compatible = "haoyu,hym8563" },
 	{ }
 };