[PATCH i-g-t 2/2] tests/kms_vrr: Add new test to validate LOBF

[Joshi, Kunal1]

Hello Jeevan,


Regarding one of the changes suggested

We got feedback from Animesh, for now you can add a fixme once we have kmd changes available
You can add this check.

>From Animesh
"Lobf can be enabled when (Set Context Latency + Guardband) > (First SDP Position + Wake Time). I am not sure waketime and sdp position details are used by any other igt tests are not. If needed I can add part of lobf_info debugfs entry from kernel."

LGTM 
Reviewed-by: Kunal Joshi <kunal1.joshi at intel.com>

can we have execution before merging with required kmd patches?