The configuration documentation shows how to add the native vlan. Is there a document for adding the native vlan and another vlan.
bridge# configure terminal
bridge(config)# interface dot11radio0.1
bridge(config-subif)# encapsulation dot1q 1 native
bridge(config-subif)# bridge group 1
bridge(config-subif)# exit
bridge(config)# interface fastEthernet0.1
bridge(config-subif)# encapsulation dot1q 1 native
bridge(config-subif)# bridge group 1
bridge(config-subif)# exit
bridge(config)# interface dot11radio0
bridge(config-if)# ssid batman
bridge(config-ssid)# vlan 1
bridge(config-ssid)# infrastructure-ssid
bridge(config-ssid)# end
http://www.cisco.com/en/US/products/ps5861/products_configuration_guide_chapter09186a008021e5d8.html