iio: light: cm3232: make struct cm3232_als_info const

Add const qualifier to struct cm3232_als_info. This is read-only data so
it can be made const.

Signed-off-by: David Lechner <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/iio/light/cm3232.c

···
 	int mlux_per_bit_base_it;
 };
 
-static struct cm3232_als_info cm3232_als_info_default = {
+static const struct cm3232_als_info cm3232_als_info_default = {
 	.regs_cmd_default = CM3232_CMD_DEFAULT,
 	.hw_id = CM3232_HW_ID,
 	.mlux_per_bit = CM3232_MLUX_PER_BIT_DEFAULT,
···
 
 struct cm3232_chip {
 	struct i2c_client *client;
-	struct cm3232_als_info *als_info;
+	const struct cm3232_als_info *als_info;
 	int calibscale;
 	u8 regs_cmd;
 	u16 regs_als;
···
 static int cm3232_get_lux(struct cm3232_chip *chip)
 {
 	struct i2c_client *client = chip->client;
-	struct cm3232_als_info *als_info = chip->als_info;
+	const struct cm3232_als_info *als_info = chip->als_info;
 	int ret;
 	int val, val2;
 	int als_it;