drivers/base/dma-contiguous.c: erratum of dev_get_cma_area

fix erratum get_dev_cma_area into dev_get_cma_area

Signed-off-by: Gioh Kim <gioh.kim@lge.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c
index fe72bac..7b0217c 100644
--- a/drivers/base/dma-contiguous.c
+++ b/drivers/base/dma-contiguous.c
@@ -278,7 +278,7 @@
  *
  * This function allocates memory buffer for specified device. It uses
  * device specific contiguous memory area if available or the default
- * global one. Requires architecture specific get_dev_cma_area() helper
+ * global one. Requires architecture specific dev_get_cma_area() helper
  * function.
  */
 struct page *dma_alloc_from_contiguous(struct device *dev, int count,