drm/amd/display: resync OTG after DIO FIFO resync

drm/amd/display: resync OTG after DIO FIFO resync

[WHY]
Tiled displays showed not aligned on 8K60hz when system resumed
from S3/S4.

[HOW]
Do dc_trigger_sync to re-sync pipes to ensure OTG become synced.

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: TungYu Lu <tungyu.lu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>