drm/amd/powerplay: support BOOTUP_DEFAULT power profile mode

This can avoid unexpected profile mode change after running
compute workload.

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