iwlwifi: move pu devices to new table

All the pu devices can now be differentiated using the new
parameters, so move them all to the new tables accordingly.

This also includes removal of a few deprecated IDs and redundant cfg
structs.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.e7dc61e665f3.I44dcf9195bb8cc9e8c8e3e87182e9185c819a99d@changeid