dmaengine: uniphier-xdmac: Fix type of address variables

The variables src_addr and dst_addr handle DMA addresses, so these should
be declared as dma_addr_t.

Fixes: 667b9251 ("dmaengine: uniphier-xdmac: Add UniPhier external DMA controller driver")
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/1639456963-10232-1-git-send-email-hayashi.kunihiko@socionext.com


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