dmaengine: ti: edma: Use bitmap_set() instead of open coded edma_set_bits()

bitmap_set() is the standard way of setting an area in the bitfield.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20190823125618.8133-4-peter.ujfalusi@ti.com


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