Implement (hack) up MODULE_PNP_INFO() support in the linuxkpi
for the Linux MODULE_DEVICE_TABLE.
Sadly we need to ensure there is a DRIVER_MODULE() (or probably just
a DECLARE_MODULE but that makes not much difference) before it
(also see man page).
Also sadly add subvendor, etc. fields as comments at the end
to the descriptor_string seem to prevent autoloading and that
should be sorted out separately. To kldxref or devinfo the
devices currently will simply look like duplicates.
Sponsored by: The FreeBSD Foundation