iio: adc: ad7124: Remove shift from scan_type

The 24 bits data is stored in 32 bits in BE. There
is no need to shift it. This confuses user-space apps.

Fixes: b3af341b ("iio: adc: Add ad7124 support")
Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Link: https://lore.kernel.org/r/20220322105029.86389-2-alexandru.tachici@analog.com


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>