drm/powerplay: print current clock level when dpm is disabled on vg20

When DPM for the specific clock is disabled, driver should still print out
current clock info for rocm-smi support on vega20

Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Eric Huang <JinhuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>