media: v4l2-dv-timings.c: fix too strict blanking sanity checks
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.159 by commit 32f01f0306a98629508f84d7ef0d1d037bc274a2, it was introduced in version v5.10.153 by commit 683015ae163481457a16fad2317af66360dc4762. For more details please see the references link.