CVE-2024-46871 drm/amd/display: Correct the defined value for AMDGPU_DMUB_NOTIFICATION_MAX

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Correct the defined value for AMDGPUDMUBNOTIFICATIONMAX Why & How It actually exposes '6' types in enum dmubnotificationtype. Not 5. Using smaller number to create array dmubcallback & dmubthreadoffload has...