drm/radeon/dpm: add pcie gen helper function
Add a helper function to determine the preferred
pcie gen based on the card, system, and circumstance.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
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Add a helper function to determine the preferred
pcie gen based on the card, system, and circumstance.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>