media: davinci/vpif.c: drop unnecessary cast

DEFINE_RES_IRQ_NAMED already casts to (struct resource), so no
need to do it again.

This fixes a sparse warning:

vpif.c:483:20: warning: cast to non-scalar
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/ti/davinci/vpif.c

@@ -480,7 +480,7 @@ static int vpif_probe(struct platform_device *pdev)
 		ret = irq;
 		goto err_put_rpm;
 	}
-	res_irq = (struct resource)DEFINE_RES_IRQ_NAMED(irq, of_node_full_name(pdev->dev.of_node));
+	res_irq = DEFINE_RES_IRQ_NAMED(irq, of_node_full_name(pdev->dev.of_node));
 	res_irq.flags |= irq_get_trigger_type(irq);
 
 	pdev_capture = kzalloc(sizeof(*pdev_capture), GFP_KERNEL);