dmaengine: fsl-edma: read/write multiple registers in cyclic transactions

dmaengine: fsl-edma: read/write multiple registers in cyclic transactions

Add support for reading multiple registers in DEV_TO_MEM transactions and
for writing multiple registers in MEM_TO_DEV transactions.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Co-developed-by: Alexandru-Catalin Ionita <alexandru-catalin.ionita@nxp.com>
Signed-off-by: Alexandru-Catalin Ionita <alexandru-catalin.ionita@nxp.com>
Signed-off-by: Larisa Grigore <larisa.grigore@oss.nxp.com>
Link: https://lore.kernel.org/r/20241219102415.1208328-6-larisa.grigore@oss.nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>