drm/amd/display: Clamp HDMI HDCP2 rx_id_list read to buffer size

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UBUNTU-CVE-2026-53137

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Clamp HDMI HDCP2 rxidlist read to buffer size Why & How During HDCP 2.x repeater authentication over HDMI, the driver reads the sink's RxStatus register and extracts a 10-bit message size field max value 1023. Th...