rtc: rx8010: Specify correct address for RX8010_RESV31

Define for reserved register 31 had the incorrect address. Specify
the correct address.
Reported-by: NJens-Peter Oswald <oswald@lre.de>
Signed-off-by: NAkshay Bhat <akshay.bhat@timesys.com>
Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>

drivers/rtc/rtc-rx8010.c

@@ -35,7 +35,7 @@
 #define RX8010_CTRL    0x1F
 /* 0x20 to 0x2F are user registers */
 #define RX8010_RESV30  0x30
-#define RX8010_RESV31  0x32
+#define RX8010_RESV31  0x31
 #define RX8010_IRQ     0x32
 
 #define RX8010_EXT_WADA  BIT(3)