drm/amdgpu: retire legacy get_retire_flip_bits for UMC

Remove the legacy get_retire_flip_bits implementation for UMC v12

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Ce Sun <cesun102@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Ce Sun 2026-04-03 11:08:29 +08:00 • committed by Alex Deucher
commit 656fecdc68