drm/amd/powerplay: correct the clocks for DAL to be Khz unit

Currently the clocks reported are in 10Khz unit. Correct them
as Khz unit as DAL wanted.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Feifei <Xu&lt;Feifei.Xu@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>