dmaengine: pl08x: Fix double word

Fix the double word "many" in comments.

Signed-off-by: Shaomin Deng <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/amba-pl08x.c

···
 	INIT_LIST_HEAD(&dmadev->channels);
 
 	/*
-	 * Register as many many memcpy as we have physical channels,
+	 * Register as many memcpy as we have physical channels,
 	 * we won't always be able to use all but the code will have
 	 * to cope with that situation.
 	 */