drm/amd/powerplay: use pp_feature_mask to control uclk(mclk) dpm enabled

the uclk dpm feature is not work well on all navi10 asic,
use pp feature mask module parameter to control it.

Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Jack Xiao <Jack.Xiao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>