amdgpu: DMCUB updates forvarious AMDGPU ASICs
DMCUB updates for DCN314, DCN351, DCN35 and DCN401. From internal git commit bc37c6a2877338acba0fe8bb7a0b2a5b88d72863
Firmware release 0.0.252.0 Tested with DC 3.2.319
Release Notes:
- Fix table mapping for tuning set
- Fix abnormal min_duration calculation
- Change power-down sequence
- Clean up unused register mask
- Restore lost power saving register settings