media: i2c/ov02a10.c: add cast to fix type mismatch

By adding this cast '(__force __le16)' this sparse warning
is fixed:

drivers/media/i2c/ov02a10.c:391:19: warning: cast to restricted __le16
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/i2c/ov02a10.c

@@ -388,7 +388,7 @@ static int ov02a10_check_sensor_id(struct ov02a10 *ov02a10)
 	if (ret < 0)
 		return ret;
 
-	chip_id = le16_to_cpu(ret);
+	chip_id = le16_to_cpu((__force __le16)ret);
 
 	if ((chip_id & OV02A10_ID_MASK) != OV02A10_ID) {
 		dev_err(&client->dev, "unexpected sensor id(0x%04x)\n", chip_id);