drm/amd/pp: Convert 10KHz to KHz as variable name

The default clock unit in powerplay is 10KHz.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 files changed