[media] media: adv7604: fix probe of ADV7611/7612

Prior to commit f862f57d ("[media] media: i2c: ADV7604: Migrate to
regmap"), the local variable 'val' contained the combined register
reads used in the chipset version ID test. Restore this expectation
so that the comparison works as it used to.
Signed-off-by: William Towle <william.towle@codethink.co.uk>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/i2c/adv7604.c

@@ -3108,7 +3108,7 @@ static int adv76xx_probe(struct i2c_client *client,
 			v4l2_err(sd, "Error %d reading IO Regmap\n", err);
 			return -ENODEV;
 		}
-		val2 |= val;
+		val |= val2;
 		if ((state->info->type == ADV7611 && val != 0x2051) ||
 			(state->info->type == ADV7612 && val != 0x2041)) {
 			v4l2_err(sd, "not an adv761x on address 0x%x\n",