[media] go7007: update the README

Include the patch required to add support for the go7007 to saa7134.
To be applied once the driver is moved out of staging.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1 file changed