rtc: rx8025: fix rx8025_init_client()

rx8025_init_client is modifying ctrl[0] and writing it to RX8025_REG_CTRL2
but ctrl[0] is actually RX8025_REG_CTRL1.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
diff --git a/drivers/rtc/rtc-rx8025.c b/drivers/rtc/rtc-rx8025.c
index ab5fb4f..22ce08d 100644
--- a/drivers/rtc/rtc-rx8025.c
+++ b/drivers/rtc/rtc-rx8025.c
@@ -263,7 +263,7 @@
 		need_clear = 1;
 
 	if (need_clear) {
-		ctrl2 = ctrl[0];
+		ctrl2 = ctrl[1];
 		ctrl2 &= ~(RX8025_BIT_CTRL2_PON | RX8025_BIT_CTRL2_VDET |
 			   RX8025_BIT_CTRL2_CTFG | RX8025_BIT_CTRL2_WAFG |
 			   RX8025_BIT_CTRL2_DAFG);