dma: pl330: silence a compile warning

On 64 bit systems GCC warns that:

drivers/dma/pl330.c: In function ‘pl330_filter’:
drivers/dma/pl330.c:2317:21: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

It's harmless and I have casted it away.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

drivers/dma/pl330.c

@@ -2314,7 +2314,7 @@ bool pl330_filter(struct dma_chan *chan, void *param)
 		return false;
 
 	peri_id = chan->private;
-	return *peri_id == (unsigned)param;
+	return *peri_id == (unsigned long)param;
 }
 EXPORT_SYMBOL(pl330_filter);