mfd: lm3533: 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: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

drivers/mfd/lm3533-core.c

···
 	}
 }
 
-static struct regmap_config regmap_config = {
+static const struct regmap_config regmap_config = {
 	.reg_bits	= 8,
 	.val_bits	= 8,
 	.max_register	= LM3533_REG_MAX,