Stable team, please backport
8c9006283e4b ("Revert "drm/i915/dp: Reject HBR3 when sink doesn't support TPS4"")
from v6.18-rc1 to v6.15+. It's missing the obvious
Fixes: 584cf613c24a ("drm/i915/dp: Reject HBR3 when sink doesn't support TPS4")
Thanks, Jani.