The function is never implemented for raven on linux.
It follows similair implementation as on windows.

SMU still needs to notify SMC and copy WM table, which is added
here. But on other Asics such as Vega this step is not implemented.
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>