mac80211: rt2x00: backport upstream patches
Import patches from upstream to sync 19.07 with master:
9f3e3323e996 rt2x00: allow to specify watchdog interval
2034afe4db4a rt2800: add helpers for reading dma done index
759c5b599cf4 rt2800: initial watchdog implementation
09db3b000619 rt2800: add pre_reset_hw callback
710e6cc1595e rt2800: do not nullify initialization vector data
e403fa31ed71 rt2x00: add restart hw
0f47aeeada2a rt2800: do not enable watchdog by default
41a531ffa4c5 rt2x00usb: fix rx queue hang
3b902fa811cf rt2x00usb: remove unnecessary rx flag checks
1dc244064c47 rt2x00: no need to check return value of debugfs_create functions
706f0182b1ad rt2800usb: Add new rt2800usb device PLANEX GW-USMicroN
95844124385e rt2x00: clear IV's on start to fix AP mode regression
567a9b766b47 rt2x00: do not set IEEE80211_TX_STAT_AMPDU_NO_BACK on tx status
14d5e14c8a6c rt2x00: clear up IV's on key removal
13fa451568ab Revert "rt2800: enable TX_PIN_CFG_LNA_PE_ bits per band"
--pending-- rt2800: remove errornous duplicate condition
Signed-off-by: Daniel Golle <daniel@makrotopia.org>