dmaengine: imx-sdma: clean up some inconsistent indenting

Eliminate the following coccicheck warning:
./drivers/dma/imx-sdma.c:896:3-16: code aligned with following code on
line 897
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220217011604.123106-1-yang.lee@linux.alibaba.comSigned-off-by: Vinod Koul <vkoul@kernel.org>