rmylavarapu d174860854 gpu: nvgpu: Debugfs for Volt ...

Changes:
1. Reading operating voltage and minimum voltage of chip.
2. Added nvgpu_volt_init_debugfs for creating the debugfs interface.
3. Command for reading current voltage:
   cat /sys/kernel/debug/gpu_pci/volt/current_voltage
4. Command for reading minimum voltage:
   cat /sys/kernel/debug/gpu_pci/volt/minimum_voltage

Jira NVGPU-1731

Change-Id: I76d42fc376235f37c44d259398bd6f125a90413b
Signed-off-by: rmylavarapu <rmylavarapu@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1986403
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2019-02-01 09:45:57 -08:00

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