drm/amd/display: fix hubbub deadline programing

[Why]
Fix the programming of DCHUBBUB_ARB_REFCYC_PER_TRIP_TO_MEMORY_A.
Was not filled in.

Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 files changed