CVE-2025-71307 drm/panthor: Fix NULL pointer dereference on panthor_fw_unplug

In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Fix NULL pointer dereference on panthorfwunplug This patch removes the MCU halt and wait for halt procedures during panthorfwunplug as the MCU can be in a variety of states or the FW may not even be loaded/initialize...