drm/amd/powerplay: update smu function for sienna_cichlid

Add function to check whether baco is support for sienna cichlid.
Remove fucntion of get clock by type with latency as it will not be
called.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>