ar71xx-generic: add alias for Ubiquiti UniFi Mesh

Fixes #1021

targets/ar71xx-generic

@@ -238,6 +238,7 @@ fi
 
 if [ "$ATH10K_PACKAGES" ]; then
 device ubiquiti-unifi-ac-lite ubnt-unifiac-lite
+alias ubiquiti-unifi-ac-mesh
 packages $ATH10K_PACKAGES
 factory