mac80211: backport ath9k GPIO support

...th10k-wifi-board.bin-for-the-OpenMesh-OM5P-AC-board.patch

...file-and-build-image-for-the-OpenMesh-OM5P-AC-board.patch

...add-kernel-support-for-the-OpenMesh-OM5P-ACv2-board.patch

...x-add-user-space-support-for-the-OpenMesh-OM5P-ACv2.patch

...ar71xx-enable-sysupgrade-for-the-OpenMesh-OM5P-ACv2.patch

...wrt/0075-om-watchdog-add-OpenMesh-OM5P-ACv2-support.patch

.../0076-uboot-envtools-add-OpenMesh-OM5P-ACv2-support.patch

...10k-wifi-board.bin-for-the-OpenMesh-OM5P-ACv2-board.patch

...rt/0078-ar71xx-add-OM5P-ACv2-to-the-OM5P-AC-profile.patch

...c-Add-support-for-custom-format-strings-for-doubles.patch

...t/0080-mac80211-ath9k-enable-platform-WLAN-LED-name.patch

...-mac80211-ath9k-set-default-state-for-platform-LEDs.patch

...s/openwrt/0082-mac80211-ath9k-enable-access-to-GPIO.patch

patches/openwrt/0083-mac80211-refresh-patch.patch

...hes/openwrt/0084-mac80211-ath9k-enable-GPIO-buttons.patch

...upport-to-build-on-platforms-without-CONFIG_GPIOLIB.patch

...-ath9k-add-HSR-tuner-support-for-UniFi-Outdoor-Plus.patch