dma-mapping: replace dmam_alloc_noncoherent with dmam_alloc_attrs

dmam_alloc_noncoherent is a trivial wrapper around dmam_alloc_attrs,
that hardcodes one particular flag.  Make the devres code more
flexible by allowing the callers to pass arbitrary flags.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Tejun Heo <tj@kernel.org>
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 4038dd3..843ab86 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -734,8 +734,9 @@
 				 dma_addr_t *dma_handle, gfp_t gfp);
 extern void dmam_free_coherent(struct device *dev, size_t size, void *vaddr,
 			       dma_addr_t dma_handle);
-extern void *dmam_alloc_noncoherent(struct device *dev, size_t size,
-				    dma_addr_t *dma_handle, gfp_t gfp);
+extern void *dmam_alloc_attrs(struct device *dev, size_t size,
+			      dma_addr_t *dma_handle, gfp_t gfp,
+			      unsigned long attrs);
 #ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT
 extern int dmam_declare_coherent_memory(struct device *dev,
 					phys_addr_t phys_addr,