CVE-2024-56683 drm/vc4: hdmi: Avoid hang with debug registers when suspended

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: hdmi: Avoid hang with debug registers when suspended Trying to read /sys/kernel/debug/dri/1/hdmi1regs when the hdmi is disconnected results in a fatal system hang. This is due to the pm suspend code disabling the dvp...