iio:imu:adis16480: fix buffering for devices with no burst mode

commit b0e85f95 upstream.

The trigger handler defined in the driver assumes that burst mode is
being used. Hence, for devices that do not support it, we have to use
the adis library default trigger implementation.

Tested-by: Julia Pineda <julia.pineda@analog.com>
Fixes: 941f1308 ("iio: adis16480: support burst read function")
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220114132608.241-1-nuno.sa@analog.com


Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>