iio: imu: bmi323: Make the local structures static

Make the local structures static within their respective driver files.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202311070530.qKhLTz1Y-lkp@intel.com/Signed-off-by: Jagath Jog J <jagathjog1996@gmail.com>
Link: https://lore.kernel.org/r/20231108035831.5889-1-jagathjog1996@gmail.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/imu/bmi323/bmi323_i2c.c

@@ -66,7 +66,7 @@ static struct regmap_bus bmi323_regmap_bus = {
 	.write = bmi323_regmap_i2c_write,
 };
 
-const struct regmap_config bmi323_i2c_regmap_config = {
+static const struct regmap_config bmi323_i2c_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 16,
 	.max_register = BMI323_CFG_RES_REG,

drivers/iio/imu/bmi323/bmi323_spi.c

@@ -41,7 +41,7 @@ static struct regmap_bus bmi323_regmap_bus = {
 	.write = bmi323_regmap_spi_write,
 };
 
-const struct regmap_config bmi323_spi_regmap_config = {
+static const struct regmap_config bmi323_spi_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 16,
 	.pad_bits = 8,