Set variant

src/freedombone-image

@@ -557,7 +557,7 @@ if [[ $VARIANT == 'usb' ]]; then
 fi
 
 if [[ $VARIANT == 'beaglebonewifi' || $VARIANT == 'beaglebonewireless' ]]; then
-    VARIANT == 'beaglebonewifi'
+    VARIANT='beaglebonewifi'
     if [ ! $WIFI_SSID ]; then
         WIFI_SSID=${PROJECT_NAME}
     fi