drm/radeon: implement apci perf request
These functions use acpi methods to adjust the pcie
gen speed. Used by DPM.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
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These functions use acpi methods to adjust the pcie
gen speed. Used by DPM.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>