media: ivtv: zero-initialize cx25840 platform data

We need to zero-initialize cx25840 platform data structure to make sure
that its future members do not contain random stack garbage.
Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/pci/ivtv/ivtv-i2c.c

@@ -293,6 +293,7 @@ int ivtv_i2c_register(struct ivtv *itv, unsigned idx)
 			.platform_data = &pdata,
 		};
 
+		memset(&pdata, 0, sizeof(pdata));
 		pdata.pvr150_workaround = itv->pvr150_workaround;
 		sd = v4l2_i2c_new_subdev_board(&itv->v4l2_dev, adap,
 				&cx25840_info, NULL);