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In the previous implementation, the driver assumed that there existed
only two memory spaces that would equally distribute the amount of
read/write channels.

This might not be the case on some other implementations, therefore this
patch change this requirement so that each write/read channel has
its own linked list and data space well defined, which allows
different sizes and locations.
Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Link: https://lore.kernel.org/r/2e316cb983f8a1e09ce929029f87619dc92a52de.1613674948.git.gustavo.pimentel@synopsys.com

Signed-off-by: Vinod Koul <vkoul@kernel.org>