iio: accel: bma180: add mount matrix support

	struct i2c_client *client;

	struct iio_trigger *trig;

	const struct bma180_part_info *part_info;

	struct iio_mount_matrix orientation;

	struct mutex mutex;

	bool sleep_state;

	int scale;

	return ret;

}

static const struct iio_mount_matrix *

bma180_accel_get_mount_matrix(const struct iio_dev *indio_dev,

				const struct iio_chan_spec *chan)

{

	struct bma180_data *data = iio_priv(indio_dev);

	return &data->orientation;

}

static const struct iio_enum bma180_power_mode_enum = {

	.items = bma180_power_modes,

	.num_items = ARRAY_SIZE(bma180_power_modes),

static const struct iio_chan_spec_ext_info bma180_ext_info[] = {

	IIO_ENUM("power_mode", true, &bma180_power_mode_enum),

	IIO_ENUM_AVAILABLE("power_mode", &bma180_power_mode_enum),

	{ },

	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, bma180_accel_get_mount_matrix),

	{ }

};

#define BMA180_ACC_CHANNEL(_axis, _bits) {				\

		chip = id->driver_data;

	data->part_info = &bma180_part_info[chip];

	ret = iio_read_mount_matrix(&client->dev, "mount-matrix",

				&data->orientation);

	if (ret)

		return ret;

	ret = data->part_info->chip_config(data);

	if (ret < 0)

		goto err_chip_disable;