MST/DSC fixes for stable

Hi,

Jerry has been working on getting a lot of testing for these two commits:

commit 9afeda049642 ("drm/amd/display: Skip Invalid Streams from DSC Policy") commit 4641169a8c95 ("drm/amd/display: Fix incorrect DSC recompute trigger")

They fix a ton of MST issues reported in the drm/amd tracker over the last few kernel releases.

Can you please apply to 6.11.y and 6.12.y?

Thanks,