Aaron Tian 5d740f98b0 gpu: nvgpu: enable CONFIG_GK20A_DEVFREQ for k5.9 ...

Enable CONFIG_GK20A_DEVFREQ and apply corresponding
changes for kernel-5.9
- Remove frequency clipping of devfreq min/max frequency
  constraint due to devfreq already takes care of it.
- Register available GPU frequencies to OPP framework
  due to devfreq access available device frequencies
  through OPP frameworks during device frequency
  transition.

Bug 200639056

Change-Id: I72e4a7825ae9ca814791dc283138d17a5cfbe8e2
Signed-off-by: Aaron Tian <atian@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2400107
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2020-12-15 14:13:28 -06:00

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