CVE-2025-38137 PCI/pwrctrl: Cancel outstanding rescan work when unregistering

In the Linux kernel, the following vulnerability has been resolved: PCI/pwrctrl: Cancel outstanding rescan work when unregistering It's possible to trigger use-after-free here by: a forcing rescanworkfunc to take a long time and b utilizing a pwrctrl driver that may be unloaded for some reason...