iio: adc: ti-ads131e08: Fix alignment for DMA safety

iio: adc: ti-ads131e08: Fix alignment for DMA safety

[ Upstream commit 55afdd050c063ae4b8dbd566107a030c00d005fd ]

____cacheline_aligned is an insufficient guarantee for non-coherent DMA
on platforms with 128 byte cachelines above L1.  Switch to the updated
IIO_DMA_MINALIGN definition.

Fixes: d935eddd2799 ("iio: adc: Add driver for Texas Instruments ADS131E0x ADC family")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Tomislav Denis <tomislav.denis@avl.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-36-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>