dmaengine: omap-dma: initialize can_pause to false

can_pause is not initialized so it contains garbage.  Fix this
by setting it to false.

Found using static analysis with cppcheck.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

drivers/dma/omap-dma.c

@@ -1286,7 +1286,7 @@ static int omap_dma_pause(struct dma_chan *chan)
 	struct omap_dmadev *od = to_omap_dma_dev(chan->device);
 	unsigned long flags;
 	int ret = -EINVAL;
-	bool can_pause;
+	bool can_pause = false;
 
 	spin_lock_irqsave(&od->irq_lock, flags);