csky: don't use GFP_DMA in atomic_pool_init

csky does not implement ZONE_DMA, which means passing GFP_DMA is a no-op.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Guo Ren <ren_guo@c-sky.com>

arch/csky/mm/dma-mapping.c

@@ -35,7 +35,7 @@ static int __init atomic_pool_init(void)
 	if (!atomic_pool)
 		BUG();
 
-	page = alloc_pages(GFP_KERNEL | GFP_DMA, get_order(size));
+	page = alloc_pages(GFP_KERNEL, get_order(size));
 	if (!page)
 		BUG();