drm/amd/powerplay: added voltage boot time calibration

Run AFLL BTC after upload pptable and before enabling
all smu features.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>