video/hdmi: Pass buffer size to infoframe unpack functions

To make sure the infoframe unpack functions don't end up examining
stack garbage or oopsing, let's pass in the size of the buffer.

v2: Convert tda1997x.c as well (kbuild test robot)

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: linux-media@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180920185145.1912-3-ville.syrjala@linux.intel.com
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>

drivers/media/i2c/adv7511.c

@@ -550,7 +550,7 @@ static void log_infoframe(struct v4l2_subdev *sd, const struct adv7511_cfg_read_
 	buffer[3] = 0;
 	buffer[3] = hdmi_infoframe_checksum(buffer, len + 4);
 
-	if (hdmi_infoframe_unpack(&frame, buffer) < 0) {
+	if (hdmi_infoframe_unpack(&frame, buffer, sizeof(buffer)) < 0) {
 		v4l2_err(sd, "%s: unpack of %s infoframe failed\n", __func__, cri->desc);
 		return;
 	}