Mine

config wifi-device  wifi0
        option type     atheros
        option channel  5
       option diversity 1
#       option txantenna 0
#       option rxantenna 0
#       option distance  2000
# disable radio to prevent an open ap after reflashing:
option disabled 0
config wifi-iface
        option device   wifi0
        option network  lan
        option mode     ap
        option ssid     OpenWrt
        option hidden   0
#       option txpower  15
#       option bgscan   enable
        option encryption none

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config interface loopback
        option ifname   lo
        option proto    static
        option ipaddr   127.0.0.1
        option netmask  255.0.0.0

config interface lan
        option ifname   eth0
        option proto    dhcp
        option hostname dengar
#       option ipaddr   192.168.10.1
#       option netmask  255.255.255.0