iio: imu: fxos8700: fix map label of channel type to MAGN sensor

iio: imu: fxos8700: fix map label of channel type to MAGN sensor

commit 0868a4e46e43990022ef438e343b1ae203742c66 upstream.

FXOS8700 is an IMU sensor with ACCEL sensor and MAGN sensor.
Sensor type is indexed by corresponding channel type in a switch.
IIO_ANGL_VEL channel type mapped to MAGN sensor has caused confusion.

Fix the mapping label of "IIO_MAGN" channel type instead of
"IIO_ANGL_VEL" channel type to MAGN sensor.

Fixes: 566d166b3663 ("iio: imu: Add support for the FXOS8700 IMU")
Signed-off-by: Carlos Song <carlos.song@nxp.com>
Link: https://lore.kernel.org/r/20221208071911.2405922-2-carlos.song@nxp.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>