wireless-drivers-next patches for 5.1

Most likely the last set of patches for 5.1. WPA3 support to ath10k
and qtnfmac. FTM support to iwlwifi and ath10k. And of course other
new features and bugfixes.

wireless-drivers was merged due to dependency in mt76.

Major changes:

iwlwifi

* HE radiotap

* FTM (Fine Timing Measurement) initiator and responder implementation

* bump supported firmware API to 46

* VHT extended NSS support

* new PCI IDs for 9260 and 22000 series

ath10k

* change QMI interface to support the new (and backwards incompatible)
  interface from HL3.1 and used in recent HL2.0 branch firmware
  releases

* support WPA3 with WCN3990

* support for mac80211 airtime fairness based on transmit rate
  estimation, the firmware needs to support WMI_SERVICE_PEER_STATS to
  enable this

* report transmit airtime to mac80211 with firmwares having
  WMI_SERVICE_REPORT_AIRTIME feature, this to have more accurate
  airtime fairness based on real transmit time (instead of just
  estimated from transmit rate)

* support Fine Timing Measurement (FTM) responder role

* add dynamic VLAN support with firmware having WMI_SERVICE_PER_PACKET_SW_ENCRYPT

* switch to use SPDX license identifiers

ath

* add new country codes for US

brcmfmac

* support monitor frames with the hardware/ucode header

qtnfmac

* enable WPA3 SAE and OWE support

mt76

* beacon support for USB devices (mesh+ad-hoc only)

rtlwifi

* convert to use SPDX license identifiers

libertas_tf

* get the MAC address before registering the device
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Merge tag 'iwlwifi-next-for-kalle-2019-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

Fifth batch of iwlwifi patches intended for v5.1

* Some small fixes and continued work on the new debugging
  infrastructure;
* Greg's debugfs clean-ups;
* Some janitorial patches from the community;
* Fix to one false-positive compiler warning;
* VHT extended NSS support;
* New PCI IDs for 9260 and 22000 series;
* Other general bugfixes and cleanups;