drm/amd/display: Optimize passive update planes.

[Why]
passive update planes still spends a litte more
time on some cases.

[How]
Remove unnecessary trace which involving in some register read.
Disable debug output for release build.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>