fwget: update realtek and intel pci entries

For Realtek we only add new entries.

For Intel the old way of extracting IDs from the driver no longer
works. The new list is shortened as we drop more specific entries
which were already covered by wildcard entries. The new lists are
also sorted within the groups.
There are 4 entries the new driver no longer carries but are still
present in older versions, so we keep them manually.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days