drm/amd/powerplay: and smc dpm info struct for sienna_cichlid

And atom_smc_dpm_info_v4_9 struct for sienna_cichlid use.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>