dmaengine: jz4780: Replace uint32_t with u32

Replace the uint32_t type used all over dma-jz4780.c with the equivalent
Linux type: u32.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20211206174259.68133-6-paul@crapouillou.net


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