Merge tag 'iwlwifi-next-for-kalle-2018-12-14' of...

Merge tag 'iwlwifi-next-for-kalle-2018-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

Third batch of iwlwifi patches intended for v4.21

* Some cleanups in the HW configuration structures;
* More work on the debugging infrastructure;
* Fixes related to 802.11ax;
* Other cleanups and small fixes;