drm/dp: Fix OOB read when handling Post Cursor2 register
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.17.2 by commit aeaed9a9fe694f8b1462fb81e2d33298c929180b, it was introduced in version v5.5 by commit 79465e0ffeb9e4866939ea562bc55367be91e595. For more details please see the references link.