Add firmware loader and wlan-assistant from droid-hal

lib/systemd/system/wlan-assistant.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=WLAN Assistant
+After=lxc-android.service
+Before=wlan-module.service
+
+[Service]
+Type=basic
+Restart=always
+ExecStart=/vendor/bin/wlan_assistant
+
+[Install]
+WantedBy=multi-user.target

usr/bin/droid/droid-load-firmware.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+
+FIRMWARE_FOLDERS="/system/etc/firmware/ /odm/firmware/ /vendor/firmware/ /firmware/image/"
+
+log() {
+    logger -p daemon.info -t firmware "$@"
+}
+
+log "Attempting to load firmware $FIRMWARE for $DEVPATH"
+
+if [ -e /sys$DEVPATH/loading ]; then
+    for folder in $FIRMWARE_FOLDERS; do
+        if [ -e "$folder/$FIRMWARE" ]; then
+            log "Loading firmware $folder/$FIRMWARE"
+
+            echo 1 > /sys$DEVPATH/loading
+            cat "$folder/$FIRMWARE" > /sys$DEVPATH/data
+            echo 0 > /sys$DEVPATH/loading
+
+            log "Loaded firmware $FIRMWARE"
+            exit 0
+        fi
+    done
+
+    log "Failed to find firmware $FIRMWARE for $DEVPATH"
+    echo "\-1" > /sys$DEVPATH/loading
+    exit 1
+else
+    log "Failed to find /sys$DEVPATH/loading, could not load $FIRMWARE."
+    exit 1
+fi
+