rtc: rx8025: fix incorrect register reference

This code is intended to operate on the CTRL1 register, but ctrl[1] is
actually CTRL2. Correctly, ctrl[0] is CTRL1.

Signed-off-by: Yuta Hayama <[e-mail]>
Fixes: 71af91565052 ("rtc: rx8025: fix 12/24 hour mode detection on RX-8035")
Cc: [e-mail]
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Alexandre Belloni <[e-mail]>

drivers/rtc/rtc-rx8025.c

···
 			return hour_reg;
 		rx8025->is_24 = (hour_reg & RX8035_BIT_HOUR_1224);
 	} else {
-		rx8025->is_24 = (ctrl[1] & RX8025_BIT_CTRL1_1224);
+		rx8025->is_24 = (ctrl[0] & RX8025_BIT_CTRL1_1224);
 	}
 out:
 	return err;