Atheros wireless interface not working

[Sreenath Battalahalli]

Hi

I got a new laptop (Acer E5-573) that has an atheros wireless adapter.
However, the driver available with Freebsd 10.2 does not recognise the adapter, and I don't see the wlan0 interface.

Here are relevant lines from 
$ pciconf -lv

none2 at pci0:3:0:0:       class=0x028000 card=0x080611ad chip=0x0042168c rev=0x30
hdr=0x00
    vendor     = 'Atheros Communications Inc.'
    class      = network

dmesg shows one following lines for the same device.
pci3: <network> at device 0.0 (no driver attached)

any help in getting this working appreciated.

thanks,
Sreenath