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amdgpu: DMCUB updates forvarious AMDGPU ASICs

Alex Hungrequested to merge
kernel-firmware/drm-firmware:amd-staging into main

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

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