[v1] DMA:omap-dma:Avoid build error by changing the function name

[venkat.prashanth2498@gmail.com]

From: Venkat Prashanth B U <venkat.prashanth2498@gmail.com>

Change the name of the function omap_dma_filter_fn to avoid
the following build error in linux kernel version 4.4 :

drivers/dma/dma-omap.c:1273:6: error:
redefinition of 'omap_dma_filter_fn'

Signed-off-by: Venkat Prashanth B U <venkat.prashanth2498@gmail.com>
Changes for v1:
- Edited subject and description of the patch to fit with the change
  done in the code base, as suggested by Vinod Koul.

- In order to avoid  issues like backporting on stable the
  checkpatch.pl issues are dropped as suggested by Vinod Koul.
---
 drivers/dma/omap-dma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c
index 1dfc71c..8545dda 100644
--- a/drivers/dma/omap-dma.c
+++ b/drivers/dma/omap-dma.c
@@ -1269,7 +1269,7 @@ static struct platform_driver omap_dma_driver = {
 	},
 };
 
-bool omap_dma_filter_fn(struct dma_chan *chan, void *param)
+bool omap_dma_filter_func(struct dma_chan *chan, void *param)
 {
 	if (chan->device->dev->driver == &omap_dma_driver.driver) {
 		struct omap_dmadev *od = to_omap_dma_dev(chan->device);