drivers/rtc/rtc-ab-b5ze-s3.c: constify struct regmap_config

The regmap_config struct may be const because it is not modified by the
driver and regmap_init() accepts pointer to const.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-ab-b5ze-s3.c

@@ -881,7 +881,7 @@ static const struct rtc_class_ops rtc_ops = {
 	.alarm_irq_enable = abb5zes3_rtc_alarm_irq_enable,
 };
 
-static struct regmap_config abb5zes3_rtc_regmap_config = {
+static const struct regmap_config abb5zes3_rtc_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 };