regulator: sky81452: Constify sky81452_reg_ops

sky81452_reg_ops is never changed, make it const.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/sky81452-regulator.c

@@ -34,7 +34,7 @@
 #define SKY81452_LEN	0x40
 #define SKY81452_LOUT	0x1F
 
-static struct regulator_ops sky81452_reg_ops = {
+static const struct regulator_ops sky81452_reg_ops = {
 	.list_voltage = regulator_list_voltage_linear_range,
 	.map_voltage = regulator_map_voltage_linear_range,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,