dmaengine: s3c24xx: fix pointer cast warnings

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

drivers/dma/s3c24xx-dma.c: In function 's3c24xx_dma_filter':
drivers/dma/s3c24xx-dma.c:1421:24: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

Use a long value for type conversion.
Suggested-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NKrzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

drivers/dma/s3c24xx-dma.c

@@ -1418,7 +1418,7 @@ bool s3c24xx_dma_filter(struct dma_chan *chan, void *param)
 
 	s3cchan = to_s3c24xx_dma_chan(chan);
 
-	return s3cchan->id == (int)param;
+	return s3cchan->id == (uintptr_t)param;
 }
 EXPORT_SYMBOL(s3c24xx_dma_filter);