The dma of a100 is similar to h6, with some minor changes to support greater addressing capabilities. Add support for it. Signed-off-by: Yangtao Li <frank@allwinnertech.com> Link: https://lore.kernel.org/r/719852c6a9a597bd2e82d01a268ca02b9dee826c.1604988979.git.frank@allwinnertech.com Signed-off-by: Vinod Koul <vkoul@kernel.org>