drm/amd/display: Re-implement minimal transition deferral

drm/amd/display: Re-implement minimal transition deferral

[Why]
The update v3 path got refactored into new functions, which happened just
before the previous implementation was submitted, which resulted in the
optimizations not executing. This commit re-implements the same logic in
the new codepath.

Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Signed-off-by: Matthew Stewart <matthew.stewart2@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>