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misc/pvpanic-pci: Allow automatic loading

Eric Auger requested to merge eauger1/centos-stream-9:backport-pvpanic-autoload into main

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1977192 Upstream Status: in mainline(5.15) Testing: On guest I now can see pvpanic-pci 0000:00:01.0: enabling device (0000 -> 0002)

The virtual machine monitor (QEMU) exposes the pvpanic-pci device to the guest. On guest side the module exists but currently isn't loaded automatically. So the driver fails to be probed and does not its job of handling guest panic events.

Instead of requiring manual modprobe, let's include a device database using the MODULE_DEVICE_TABLE macro and let the module auto-load when the guest gets exposed with such a pvpanic-pci device.

Signed-off-by: Eric Auger eric.auger@redhat.com Link: https://lore.kernel.org/r/20210629072214.901004-1-eric.auger@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org (cherry picked from commit 28b6a003bcdfa1fc4603b9185b247ecca7af9bef) Signed-off-by: Eric Auger eric.auger@redhat.com

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