dmaengine: dw-axi-dmac: Burst length settings

Burst length, DMA HW capability set in dt-binding is now used in driver.

Signed-off-by: Pandith N <pandith.n@intel.com>
Tested-by: Pan Kris <kris.pan@intel.com>
Link: https://lore.kernel.org/r/20210802055454.15192-4-pandith.n@intel.com


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