dmaengine: coh901318: fix pointer cast warnings

On some systems, pointer can be large than unsigned int, triggering warning
pointer-to-int-cast on conversion.

drivers/dma/coh901318.c: In function 'coh901318_filter_id':
drivers/dma/coh901318.c:1769:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  unsigned int ch_nr = (unsigned int) chan_id;

Also, converting an iomem pointer for print leads to warn on some system
which can be avoided with %p specfier

drivers/dma/coh901318.c: In function 'coh901318_probe':
drivers/dma/coh901318.c:2748:3: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
   (u32) base->virtbase);
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

drivers/dma/coh901318.c

@@ -1766,7 +1766,7 @@ static int coh901318_resume(struct dma_chan *chan)
 
 bool coh901318_filter_id(struct dma_chan *chan, void *chan_id)
 {
-	unsigned int ch_nr = (unsigned int) chan_id;
+	unsigned long ch_nr = (unsigned long) chan_id;
 
 	if (ch_nr == to_coh901318_chan(chan)->id)
 		return true;
@@ -2744,8 +2744,8 @@ static int __init coh901318_probe(struct platform_device *pdev)
 		goto err_register_of_dma;
 
 	platform_set_drvdata(pdev, base);
-	dev_info(&pdev->dev, "Initialized COH901318 DMA on virtual base 0x%08x\n",
-		(u32) base->virtbase);
+	dev_info(&pdev->dev, "Initialized COH901318 DMA on virtual base 0x%p\n",
+		base->virtbase);
 
 	return err;