drm/amd/display: Noitfy DMCUB of D0/D3 state in hardware init

[Why]
Missing a dc_dmub_srv_notify_fw_dc_power_state in driver init.

[How]
Notify DMCUB of D0 state in hardware_init.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: JinZe.Xu <JinZe.Xu@amd.com>
Signed-off-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>