drm/amdgpu/pm: support smu_post_init for yellow carp

Add smu_post_init support for yellow carp.

Signed-off-by: Aaron Liu <aaron.liu@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>