Change how atheros wifi drivers get installed

drivers/README

-Since compiling Atheros drivers for use with a wifi dongle on the Beaglebone Black takes a long time pre-compiled drivers are also available here. These may be extracted into /lib/firmware/ before beginning the main installation via 'freedombone menuconfig'.
-
-sha256:
-7eb9324681f03c7630ed01e490ea447dfbd96c9b5389e45b64e4646d1be16ff1  ath9k_htc_driver_bbb.tar.gz

drivers/ath9k_htc_driver_bbb.tar.gz.asc

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src/freedombone-image-customise

         return
     fi
 
-    firmware_filename="open-ath9k-htc-firmware_1.3-1_all.deb"
-    firmware_hash='5fea58ffefdf0ef15b504db7fbe3bc078c03e0d927bba64085e4b6f2546102f5'
-
-    firmware_url="http://us.archive.trisquel.info/trisquel/pool/main/o/open-ath9k-htc-firmware/$firmware_filename"
-    firmware_tempfile="/tmp/$firmware_filename"
-    wget "$firmware_url" -O "$rootdir$firmware_tempfile"
-    downloaded_firmware_hash=$(sha256sum "$rootdir$firmware_tempfile" | awk -F ' ' '{print $1}')
-    if [[ "$downloaded_firmware_hash" == "$firmware_hash" ]]; then
-        chroot "$rootdir" dpkg -i "$firmware_tempfile"
-    else
-        echo 'WARNING: Atheros Wifi firmware hash does not match. The driver has not been installed.'
-    fi
+    chroot "$rootdir" dpkg -i /root/freedombone/drivers/firmware-ath9k-htc.deb
 }
 
 configure_wifi() {

src/freedombone-utils-wifi

 # License
 # =======
 #
-# Copyright (C) 2015-2016 Bob Mottram <bob@freedombone.net>
+# Copyright (C) 2015-2018 Bob Mottram <bob@freedombone.net>
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
         return
     fi
 
-    atheros_drivers_file=drivers/ath9k_htc_driver_bbb.tar.gz
+    atheros_drivers_file=drivers/firmware-ath9k-htc.deb
     if [ ! -f $atheros_drivers_file ]; then
         if [ ! -f ~/freedombone/$atheros_drivers_file ]; then
             return
     else
         atheros_drivers_file=$(pwd)/$atheros_drivers_file
     fi
-    if [ ! -d /lib/firmware ]; then
-        mkdir /lib/firmware
-        if [ ! -d /lib/firmware ]; then
-            return
-        fi
-    fi
-    if [ -f /lib/firmware/htc_9271.fw ]; then
-        return
-    fi
-    curr_dir=$(pwd)
-    cd /lib/firmware
-    tar -xzvf $atheros_drivers_file
+    dpkg -i $atheros_drivers_file
     reset_usb_devices
-    cd $curr_dir
     update_wifi_adaptors
     if [ $IFACE ]; then
         wpa_action ${IFACE} stop