drm/amd/powerplay: correct the pp_feature output on Arcturus

Fix for the commit below:
drm/amd/powerplay: implment sysfs feature status function in smu

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>