adc: improves buffer management to hold repetitive reads.

ADC allows to program repetitives sampling after a read request.
User should be able to provide buffers for each table entry that can
hold subsequente repetitive samples.

Change-Id: I75da4a480a0e3f241d9276cf4fe3999a9cfbba2c
Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@linux.intel.com>
2 files changed