This patch adds the deepbuffer device which can be opened with a bigger
buffer size. The application can disable interrupts and sleep for longer
duration.
Signed-off-by: NSubhransu S. Prusty <subhransu.s.prusty@intel.com>
Acked-By: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>