Revert "iio: at91_adc: Use devm_kcalloc to allocate arrays"

This reverts commit 45259859492812c8b700ae1d157be01a8d2babfe.
This fixes build error because devm_kcalloc does not exist in current tree.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
1 file changed